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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
Give `EAN` value of Mg in `[Mg(EDTA)]^(2-)` .A. `16`B. `20`C. `22`D. `18` |
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Answer» Correct Answer - C `EDTA` is hexadentate . |
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| 752. |
The correct nomenclature for `Fe_4[Fe(CN)_6]_3` isA. (a) ferroso-ferric cyanideB. (b) ferric-ferrous hexacyanateC. (c) iron (III) hexacyanidoferrateD. (d) hexacynoferrate (III-II) |
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Answer» Correct Answer - C iron (III) hexacyanidoferrate (II) |
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| 753. |
Which statement in incorrect for metal - ligand complex ?A. Larger the value if ionisation potential of central metal , stronger is the bondB. Greater the dipole moment of ligand , more stable is metal ligand bondC. Greater the charge on ligand , more stronger is the bondD. Larger the ligand , less stable is the metal -ligand complex . |
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Answer» Correct Answer - D Larger ligands form more stable metal - ligand complex . |
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| 754. |
The oxidation number of chromium in sodium tetrafluorido oxochromate complex isA. (a) IIB. (b) IVC. (c) VID. (d) III |
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Answer» Correct Answer - B `Na_2[CrF_4O]` `x+4(-1)+(-2)=-2` `x-6=-2impliesx=+4` |
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| 755. |
How many ions are produced in aqueous solution of `[Co(H_2O)_6]Cl_2`?A. (a) `2`B. (b) `3`C. (c) `4`D. (d) `6` |
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Answer» Correct Answer - B `[Co(H_2O)_6Cl_2] hArr [Co(H_2O)_6]^(+)+2Cl^(-)` |
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| 756. |
The IUPAC name of `K_4[Fe(CN)_6]` isA. (a) potassium hexacyanidoferrate (II)B. (b) potassium ferrocyanideC. (c) tetrapotassium hexacyanidoferrate (II)D. (d) tetrapotassium ferroushexacyanide (II) |
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Answer» Correct Answer - A potassium hexacyanidoferrate (II) |
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| 757. |
When EDTA solution is added to `Mg^(2+)` ion solution then the incorect statement regarding the reaction will beA. Four coordination sites of `Mg^(2+)` are occupied by EDTA and remaining two statement j regarding sites are occupied by water moleculesB. all six coordination sites of ` Mg^(2+)` are occupiedC. pH of the solution decreasesD. Colourless `[Mg-EDTA ]^(2-)` chelate is formed |
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Answer» Correct Answer - A `Mg^(2+)` forms an octahedral complex with EDTA A in which all six coordination sites are occupied by `Mg^(2+)` . |
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| 758. |
In `K_4[Fe(CN)_6]` the EAN of Fe isA. (a) `33`B. (b) `35`C. (c) `36`D. (d) `26` |
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Answer» Correct Answer - C EAN=Atomic number-Oxidation state + 2 x number of Ligands `=26-2+2(6)=36`. |
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| 759. |
The EAN of nickel in `Ni(CO)_4` is:A. (a) `34`B. (b) `35`C. (c) `32`D. (d) `36` |
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Answer» Correct Answer - D `EAN=(At. Number - O.S + 2xxC.N.)` Hence, EAN of `Ni` in `Ni(CO)_4` is `=28-0+2xx4=36`. |
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| 760. |
Number of ions present in `K_4[Fe(CN)_6]`A. (a) `2`B. (b) `10`C. (c) `3`D. (d) `5` |
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Answer» Correct Answer - D `K_4[Fe(CN)_6]` is a complex salt. On ionisation it will dissociate in `4K^+` and `[Fe(CN_6)^(4-)]` ion. Hence, in `K_4[Fe(CN)_6]` five ions are present. |
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| 761. |
The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: The IUPAC name of `K_3[Cr(CN)_6]` is potassium hexacyano chromate (III). Reason: It is an anion complex.A. (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.B. (b) If both assertion and reason are true but reason is not the correct explanation of the assertion.C. (c) If assertion is true but reason is false.D. (d) If assertion is false but reason is true. |
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Answer» Correct Answer - B `[Cr(CN)_6]^(3-)` is an anionic complex. |
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| 762. |
These questions consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: `[Co(NO_2)_3(NH_3)_3]` does not show optical isomerism. Reason: It has a plane of symmetry.A. (a) If both the assertion and reason are true and reason is a true explanation of the assertion.B. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion.C. (c) If the assertion is true but reason is false.D. (d) If assertion is false but reason is true. |
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Answer» Correct Answer - A Both assertion and reason are true and the reason is the correct explanation of the assertion. |
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| 763. |
IUPAC name of `[Co(ONO)(NH_3)_5Cl_2]` isA. (a) pentaammine nitro cobalt (III) chlorideB. (b) pentaammine nitrito-o-cobalt (III) chlorideC. (c) pentaammine nitroso cobalt (III) chlorideD. (d) pentaammine oxo-nitro cobalt (III) chloride |
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Answer» Correct Answer - B pentaammine nitrito-o-cobalt (III) chloride |
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| 764. |
The proper name for `K_2[PtCl_6]` isA. (a) potassium platinum hexachlorideB. (b) potassium hexachlorido platinum IVC. (c) potassium hexachlorido platinate IVD. (d) potassium hexachlorido platinum |
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Answer» Correct Answer - B potassium hexachlorido platinum IV |
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| 765. |
According to IUPAC nomenclature sodium nitroprusside is named asA. sodium nitroferricyanideB. sodium nitroferrocyanideC. Sodium nitroferrocyanonitrosyl ferrate (II)D. Sodium pentacyanonitrosonium ferrate (III ) |
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Answer» Correct Answer - D Na `[Fe (CN)_(5) NO ] ` , sodium pentacyanitrosonium ferrate (III). |
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| 766. |
According to IUPAC nomenclature sodium nitroprusside is named asA. sodium pentacyanonitrosyl ferrate (II)B. sodium pentacyanonitrosyl ferrate (III)C. sodium nitroferricyanideD. sodium nitroferrocyanide |
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Answer» Correct Answer - B NO readily forms coordination complexes with transition metla bions. These complex are called nitrosyls. `F^(2+)` and NO form the complex `[Fe(H_(2)O)_(5)NO]^(2+)` which is responsible for the colour in the brown ring test for nitrates. The color is due to change transfer. This complex formally constains `Fe (+1)` and `NO^(+)` . Its magnetic moment is approximately `3.9` BM, confirming the presence of three - unpaired electrons. Note that `NO^(+)` is a strong field ligand, thus, it reshuffles the electronic configuration: `Fe^(+) (3d^(6) 4s^(1)) rarr Fe+ (3d^(7) 4s^(0))` Most nitrosyl complexes are colourd. Another example is sodium nitroprusside `Na_(2)[Fe(CN)_(5)NO]` . `2H_(2)O` . The colour (brown - red) is again due to charge transfer. This complex has `NO^(+)` as a ligands and `Fe^(+)` as the central metal ion. Thus, its IUPAC name should be sodium pentacyanidonitrosonium ferrat (II). As no such option is given, we gop for second option assuming NO to be a neutral ligand. |
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| 767. |
According to IUPAC nomenclature sodium nitroprusside is named asA. (a) Sodium pentacyanonitrosyl ferrate (III)B. (b) Sodium nitroferricyanideC. (c) Sodium nitroferrocyanideD. (d) Sodium pentacyanonitrosyl ferrate (II) |
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Answer» Correct Answer - A Sodium pentacyanonitrosyl ferrate (III) |
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| 768. |
Atomic numbers of `Cr` and `Fe` are respectively `24` and `26`. Which of the following is paramagnetic with the spin of the electron?A. (a) `[Cr(NH_3)_6]^(3+)`B. (b) `[Fe(CO)_5]`C. (c) `[Fe(CN)_6]^(4-)`D. (d) `[Cr(CO)_6]` |
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Answer» Correct Answer - A `[Fe(CN)_6]^(4-)` is diamagnetic (`Fe^(2+)` has `3d^6` configuration and the 6 electron pairs up in three d-orbitals followed by `d^2sp^3`-hybridization). `[Cr(NH_3)_6]^(3+)` is paramagnetic (`Cr^(3+)` has `3d^3` configuration. Hybridization is `d^2sp^3`. Due to 3 unpaired electrons it is paramagnetic) `[Cr(CO)_6:Cr(Z=25): [Ar]^(18)4s^1, 3d^5`. The one `4s`-electron pairs up with five `3d`-electrons in three `d`-orbitals. This is followed by `d^2sp^3`-hybridization to give octahedral complex. No unpaired electron and hence complex is diamagnetic. `Fe(CO)_5: Fe(Z=26): [Ar]^(18) 4s^2, 3d^6`. The six electrons in d-subshell pairs up in three d-orbitals. This is followed by `d^2sp^3`-hybridization to give octahedral geometry with one vacant hybridized orbital. The resulting shape of the complex is square-based pyramid. As there is no unpaired electron, the complex is diamagnetic. |
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| 769. |
Which of the following is correct value of x in `Cr(CO)_x`?A. (a) `2`B. (b) `4`C. (c) `6`D. (d) unpredictable |
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Answer» Correct Answer - C Metal carbonyls follow EAN rule. |
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| 770. |
Which of the following is correct value of x in `Cr(CO)_x`?A. 4B. 5C. 6D. 8 |
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Answer» Correct Answer - C We know that, `EAN = 24-0 + 2x = 36` `2x = 12` [i.e. atomic number of nearest noble gas] x = 6 Therefore, the formula of the compound is `Cr(CO)_(6)`. |
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| 771. |
When 0.1 mol `CoCl_(3)(NH_(3))_(5)` is treated with excess of `AgNO_(3)`, 0.2 mole of AgCl are obtained. The conductivity of solution will correspond toA. 1 : 3 electrolyteB. 1 : 2 electrolyteC. 1 : 1 electrolyteD. 3 : 1 electrolyte |
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Answer» Correct Answer - B One mole of `AgNO_(3)` precipitates one mole of chloride ion. In the above reaction, when 0.1 mole `CoCl_(3) (NH_(3))_(5)` is treated with excess of `AgNO_(3)`, 0.2 mole of `AgCl` are obtained thus, these must be two free chloride ios in the solution of electrolyte. So, molecular formula of complex will be `[Co(NH_(3))_(5) Cl] Cl_(2)`and electrolytic solution must contain `[Co (NH_(3))_(5)Cl]^(2+)` and two `Cl^(-)` as constituent ions. Thus, it is 1 : 2 electrolyte. `[Co(NH_(3))_(5)Cl]Cl_(2) rarr [Co(NH_(3))_(5)Cl]^(2 o+) (aq) + 2Cl^(-) (aq)` Hence, option (b) is the correct. |
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| 772. |
When 0.1 mol `CoCl_(3)(NH_(3))_(5)` is treated with excess of `AgNO_(3)`, 0.2 mole of AgCl are obtained. The conductivity of solution will correspond toA. 1:3 electrolyteB. 1:2 electrolyteC. 1:1 electrolyteD. 3:1 electrolyte |
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Answer» Correct Answer - B Formation of 0.2 mole of AgCl, from 0.1 mole of complex suggest the presence of two `Cl^(-)` outside the coordination sphere. Thus, the formula of the complex should be `[Co(NH_(3))_(5)Cl]Cl_(2)`. This complex ionises as `[Co(NH_(3))_(5)Cl]Cl_(2) rarr underset(1)([Co(NH_(3))_(5)Cl]^(2+))+underset(2)(2Cl^(-))` Hence, it is 1:2 electrolyte. |
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| 773. |
The name of the ring structure complex compound formed between metal ion and polydentate ligand isA. simple complexB. chelate complexC. polynuclear complexD. none of these |
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Answer» Correct Answer - B The compound in which ligands form ring with the metal ion are called chelate complex. |
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| 774. |
The denticity of the ligand `N(CH_(2)CH_(2)NH_(2))_(3)` isA. tridentateB. pentadentateC. tetradentateD. bidentate |
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Answer» Correct Answer - C `N(CH_(2) CH_(2)NH_(2))_(3)` is a tetradentate ligand as it contains four coordinating sites . |
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| 775. |
Which of the following complex compounds will exhibit highest magnetic behaviour ? `(At.No. Ti = 22, Cr = 24, Co = 27, Zn = 30)`A. `[Zn (NH_(3))_(6)]^(2+)`B. `[Ti(NH_(3))_(6)]^(3+)`C. `[Cr(NH_(3))_(6)]^(3+)`D. `[Co(NH_(3))_(6)]^(3+)` |
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Answer» Correct Answer - C `Zn^(2+) ([Ar]3d^(10))` has zero unpaired electron. In the complex, they occupy both `t_(2g)` and `e_(g)` set of orbitals. `Ti^(3+) ([Ar]3d^(1))` has one unpaired electron. In the complex, the single 3d electron occupies one of the lower energy `t_(2g)` orbitals. `Cr^(3+) ([Ar]3d^(3))` has three unpaired electrons: In the complex, they occupy the lower energy set of `t_(2g)` orbitals `t_(2g)^(3)` `e_(g)^(0)` `Co^(3+) ([Ar]3d^(6))` can have a high spin or low or low spin configuration. Because `NH_(3)` is a relatively strong field ligands, all six electrons go into lower energy `t_(2g)` orbitals. The configuration is low-spin with zero unpaired electron `(t_(2)^(6)e_(g)^(0))` . |
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| 776. |
Which of the following solvents are used for organometallic chemistry ? (i) THF (tetrahydrofuran) (ii) Ether (iii) Acetone (iv) DCM (Dichloromethane)A. (i), (ii)B. (i), (ii), (iv)C. (ii), (iii)D. (i), (iii) |
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Answer» Correct Answer - B Many reactions in inorganic chemistry are carried out in aqueous solution. Synthesis of transition metal coordination solution compounds and their reactions often take placxe either in aqueous solution or in moderately polar solvents such as ethanol and acetone. One of the striking features of organometallic chemistry is that reactions are almost never carried out in an aqueous solution. Most reactions take place in organic solvents many of which are of low polarity. This is because most organomeallic compounds are unstable in water - an illustration of their 'organic' nature. In addition, the synthesis of orgaometallic compounds is carried out under an inert atmosphere, such as `N_(2)` or Ar, as many organometallic compounds are also unstable in air. |
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| 777. |
The bond length of `C-O` bond in carbon monoxide is `1.128A` The `C-O` bond length in `[Fe(CO)_(5)]` is .A. (a) `1.128Å`B. (b) `1.72Å`C. (c) `1.118Å`D. (d) `1.15Å` |
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Answer» Correct Answer - D Due to synergic bond formation, bond order decreases and bond length increases a little. |
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| 778. |
The comple `[Fe(H_(2)O)_(6)NO]^(2+)` is formed in the brown ring test fro nitrates when freshly prepared `FesO_(4)` solution is added to aqueous solution of `NO_(3)^(-)` ions followed by addition of conc. `H_(2)SO_(4)`. Select correct statement about this complex.A. Hybridisation of iron is `sp^(3)d^(2)`B. Iron has +1 oxidation state.C. It has magnetic moment of 3.87 B.M. confirming three unpaired electrons is Fe.D. All the above are correct statement. |
| Answer» Correct Answer - D | |
| 779. |
The number of d-electrons in `[Cr(H_(2)O)_(6)]^(3+)` [atomic number of Cr =24] is : |
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Answer» Correct Answer - 3 `3d^(3)=t_(2g)^(1,1,1)eg(0,0)` |
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| 780. |
The sum of stereoisomers of comple-A, complex-B and complex-C in following reaction is ……….. `[PtCl_(4)]^(2-) underset(-2Cl^(-)) overset(+2("pyridine"))to"[Complex-A]" underset(-Cl^(-))overset(+NH_(3)) to"[Complex-B]" underset("-(Pyridine)")overset(+Br^(-))to "[Complex-C]"` |
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Answer» Correct Answer - 7 A `[Pt(Py)_(2)Cl_(2)]-=Ma_(2)b_(2) " "(2G.I.)` B `[Pt(Py)_(2)(NH_(3))Cl]-=Ma_(2)bc" "(2G.I.)` C `[Pt(Py)_(2)(NH_(3))(Br)Cl]-=Mabcd" " (3G.I.)` |
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| 781. |
A co-ordination complex has the formula `PtCl_(4).2KCl`. Electrical conductance measurements indicate the presence of three ion in one formula unit. Treatment with `AgNO_(3)` produces no precipitate of `AgCl`. What is the co-ordination number of Pt in this complex ?A. 5B. 6C. 4D. 3 |
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Answer» Correct Answer - B `PtCl_(4).2KCl-=K_(2)[PtCl_(6)]overset(aq.)iff2K^(+)+[PtCl_(6)]^(2-)`. So, it has three ions per formula unit. The `Cl^(-)` is present in coordination sphere so it will not given white precipitate with silver nitrate solution. So in the compounds the coordination number of platinum is 6. |
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| 782. |
Which of the compound show optical isomerism ? 1.`cis-[Co(NH_(3))_(4)Cl_(2)]^(+) " "2.trans-[Co(en)_(2)Cl_(2)]^(+)` `3. cis-[Co(en)_(2)Cl_(2)]^(+)" " 4.[Co(en)_(3)]^(3+)` Select the correct answer using the codes given below:A. 1 and 2B. 2 and 3C. 3 and 4D. 1,3 and 4 |
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Answer» Correct Answer - C (1) `cis-[Co(NH_(3))_(4)Cl_(2)]^(+)` has plane of symmetry as well as centre of symmetry , so optically inactive. (2) `trans-[Co(en)_(2)Cl_(2)]^(+)` has plane of symmetry as well as centre of symmetry , so optically inactive. (3 ) `cis-[co(en)_(2)Cl_(2)]^(+)` lacks plane of symmetry as well as centre of symmetry , so optically active. (4) `[Co(en)_(3)]^(3+)` lacks axis of internal rotation, so optically active. |
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| 783. |
Why are different colours observed in octahedral and tetrahedral complexes for the same metal and same ligands ? |
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Answer» Extent of spilitting of d-orbitals is different in octahedral and tetrahedral field. CFSE in octahedral and tetra federal field are closely related as. `Delta_(t)=(4/9) Delta_(o)` Where, `Delta_(t) =` crystal field splitting energy in tetrahedral field `Delta_(0) =` crystal field splitting energy in octahedral field Wavelength of light and CFSE are related to each other by fomula `Delta_(0)=E=(hc)/lambda` `E prop 1/lambda` So, higher wavelength of light is absorbed in octahedral complexes than tetrahedral complexes for same metal and ligands. Thus, different colours are observed. |
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| 784. |
The IUPAC name of `[Co(NH_(3))_(5)(NCS)]CI_(2)` isA. pentaammi9ne (thiocyanato-S)cobalt (III) chlorideB. pentaammine (thiocyanato-N)cobalt (III) chlorideC. pentaammine (mercapto-N)cobalt (III) chlorideD. pentaammine (isothiocyanato-N)cobalt (III) chloride |
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Answer» Correct Answer - B The cation is named first in both positively and nagatively charged coordination entities. The ligands are written as prefixes of the metal name. Neural ligands are given the same name as the parent molecule, whereas the names of negative lignds are given the ending ---O insted of ----e. Coordinated ammonia is commonly named ammine. For multipe ligands, the prefixes di-, tri-, tetra-, penta-, and hexa are used 2, 3, 4, 5 and 6, respectively. `SCN^(-)` ion is a chelating ligand, it can coordinate either through the sulphur (thiocyanato-S) or through nitrogen atom (thiocyanato--N). |
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| 785. |
Tetrahedral complexes of the types of `[MA_(4)]` and `[MA_(3)B]` (where M = central metal, A,B = achiral ligands) are not able to show optical isomerism becauseA. these molecules/ion have nonsuperposable minor imagesB. these molecules posses a centre of symmetryC. these molecules possess a plane of symmetry and hence are achiral.D. these molecules/ion possess `c_(n)` axis of symetry. |
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Answer» Correct Answer - C Symmetry plane divides the molecule in two halves such that one half is the mirror of the other. |
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| 786. |
If CFSE increases by 30% and 40% respectively for `Co^(3+) " to " Rh^(3+) " to " Ir^(3+)`, then the total increase in CFSE for `Ir^(3+)` with respect to `Co^(3+)` is …….. |
| Answer» Correct Answer - 82 | |
| 787. |
How many geometrical isomers are possible for `MA_(2)B_(2)C_(2)` ? |
| Answer» Correct Answer - 5 | |
| 788. |
`(MA_(2)B_(2)C_(2))^(+n)` can exhibitA. Geometrical isomerismB. Optical isomerismC. Ionisation isomerismD. Both (1) & (2) |
| Answer» Correct Answer - D | |
| 789. |
Both `Cr^(3+)` and `Pt^(4+)` have a coordination number of 6 Which of the following pairs of complexes will show approximately the same electrical conductance for their `0.1M` aqueous solutions ?A. a)`CrCI_(3).4NH_(3)andPtCI_(4).4NH_(3)`B. b)`CrCI_(3).3NH_(3)andPtCI_(4).5NH_(3)`C. c)`CrCI_(3).6NH_(3)andPtCI_(4).5NH_(3)`D. d)`CrCI_(3).5NH_(3)andPtCI_(4).5NH_(3)` |
| Answer» Correct Answer - C | |
| 790. |
Which of the following will give a pair of enantiomorphs? .A. a)`[Cr(NH_(3))_(6)][Co(CN)_(6)]`B. b)`[Co(en)_(2)CI_(2)]CI`C. c)`[Pt(NH_(3))_(4)][PtCI_(6)]`D. d)`[Co(NH_(3))_(4)CI_(2)]NO_(2)` |
| Answer» Correct Answer - B | |
| 791. |
The hypothetical complex chloro diaquatriammine cobalt (II) chloride can be represented asA. (a) `[CoCl(NH_3)_3(H_2O)_2]Cl_2`B. (b) `[Co(NH_3)_3(H_2O)Cl_3]`C. (c) `[Co(NH_3)_3(H_2O)_2Cl]`D. (d) `[Co(NH_3)_3(H_2O)_3]Cl_3` |
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Answer» Correct Answer - A `[CoCl(NH_3)_3(H_2O)_2]Cl_2` |
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| 792. |
Which of the following is considered to be an anticancer species ?A. (a) B. (b) C. (c) D. (d) |
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Answer» Correct Answer - C cis-platin is used as an anticancer drug. |
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| 793. |
In which case racemic mixture is obtained on mixing its mirror images in `1:1` molar ratio?A. (a) `[Cr(en)_3]^(3+)`B. (b) `[Ni(DMG)_2]`C. (c) `cis-[Cu(Gly)_2]`D. (d) All of these |
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Answer» Correct Answer - A (a) `[Cr(en)_3]^(3+)` exists in d- and l-forms due to the absence of one of the symmetry element(s). So it will give racemic mixture when d-and l-forms are mixed in `1:1` molar ratio. (b) `[Ni(DMG)_2]` has square planar geometry and thus has mirror plane so optically inactive. (c) cis`-[Cu(Gly)_2]` has square planar geometry and thus have mirror plane so optically inactive. |
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| 794. |
Which one of the following statement is correct?A. (a) Ferric ions give a deep green precipitate on adding potassium ferrocyanide solution.B. (b) On boiling a solution having `K^(+)`, `Ca^(2+)` and `HCO_3^(-)` ions, we get a precipitate of `K_2Ca(CO_3)_2`C. (c) Manganese salt give a violet borax test in reducing flameD. (d) From a mixed precipitate of `AgCl` and `AgI`, ammonia solution dissolves only `AgCl` |
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Answer» Correct Answer - D `AgCl+2NH_3rarr underset("Soluble complex ")(Ag(NH_3)_2Cl)` |
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| 795. |
If a transition-metla compound absorbs violet-indigo radiation in the visible region Its colour would be .A. GreenB. YellowC. OrangeD. Blue |
| Answer» Correct Answer - B | |
| 796. |
Which of the following compound is not coloured ?A. `Na_(2)[CuCl_(4)]`B. `Na_(2)[CdCl_(4)]`C. `K_(4)[Fe(CN)_(6)]`D. `K_(3)[Fe(CN)_(6)]` |
| Answer» Correct Answer - B | |
| 797. |
Transition metal compounds are usually coloured This is due to the electronic transition .A. From d-orbital to s-orbitalB. From p-orbital to s-orbitalC. From d-orbital to s-orbitalD. Within the d-orbital |
| Answer» Correct Answer - D | |
| 798. |
Which of the following compounds is brown coloured?A. (a) `Fe[Fe(CN)_4]`B. (b) `Fe_4[Fe(CN)_6]`C. (c) `Fe[Fe(CN)_6]`D. (d) `K_2Fe[Fe(CN)_6]` |
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Answer» Correct Answer - C `Fe[Fe(CN)_6]` has `Fe` in `+3` oxidation state and is brown colour. |
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| 799. |
Which one of the following will not show geometrical isomerism?A. (a) `[Cr(NH_3)_4Cl_2]Cl`B. (b) `[Co(en)_2Cl_2]Cl`C. (c) `[Co(NH_3)_5NO_2]Cl_2`D. (d) `[Pt(NH_3)_2Cl_2]` |
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Answer» Correct Answer - C `[Co(CH_3)_5NO_2]Cl_2` will not show geometrical isomerism because this complex shows 4 and 6 co-ordination numbers. |
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| 800. |
In the comples acetylbromidodicarbonylbis (triethylphosphine) iron (II), the number of `Fe-C` bond (s) is |
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Answer» Correct Answer - 3 |
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