844 + Interview Questions in PERIODIC-TABLE IN GENERAL AWARENESS Page 11 InterviewSolution

501.	In the descending order of a group in the periodic table which of the following would be true 1) All the atoms have the same number of valence electrons 2) Gram atomic volume increases 3) Electronegativity decreases 4) Metallic character decrease and basic nature of their oxides decreases Select the correct answer using the codesA. 1, 2 and 4B. 1 , 3 and 4C. 1 ,2 and 3D. 2 , 3 and 4
Answer» Correct Answer - C

Discussion

502.	Which of the following represents second ionization potential ?A. `Mg^(-) (g) rarr Mg(g) `B. `Mg^(2+)(g) rarr Mg^(3+) (g)`C. `Mg^(-) (g) rarr Mg^(+)(g)`D. `Mg^(+) (g) rarr Mg^(2+) (g)`
Answer» Correct Answer - D

Discussion

503.	Which equation represents the first ionization of calcium?A. `Ca(s) rarr Ca^(+)(g)+e^(-)`B. `Ca(g) rarr Ca^(+)(g)+e^(-)`C. `Ca^(+)(g)+Ca^(2+)(g)+e^(-)`D. `Ca^(2+)(g)+e^(-) rarr Ca^(+)(g)`
Answer» Correct Answer - B

Discussion

504.	Which list gives the symbols of the element in the order of increasing first ionization energy?A. `F,Ne,Na`B. `AI,Mg,Na`C. `Sr,Ca,Mg`D. `CI,Br,I`
Answer» Correct Answer - C

Discussion

505.	The material used in solar cells containsA. AsB. GeC. PD. Si
Answer» Correct Answer - D

Discussion

506.	Which pair of symbols identifies two elements that are metalloids?A. Si and GeB. Mg and SiC. P and AsD. Ti and V
Answer» Correct Answer - A

Discussion

507.	Which one of the following is correct order of the size of iodine species ?A. `I gt I^(-) gt I^(+)`B. `I^(+) gt I^(-) gt I`C. `I gt I^(+) gt I^(-)`D. `I^(-) gt I gt I^(+)`
Answer» Correct Answer - D

Discussion

508.	Which one is the correct order of the size of the iodine species ?A. `I gt I^(+) gt I^(-)`B. `I gt I^(-) gt I^(+)`C. `I^(+) gt I^(-) gt I`D. `I^(-) gt I gt I^(+)`
Answer» Correct Answer - D

Discussion

509.	Which of the following pairs of ions have the same electronic configurationA. `Cr^(+3),Fe^(+3)`B. `Fe^(+3),Mn^(+2)`C. `Fe^(+3),Co^(+3)`D. `Sc^(+3),Cr^(+3)`
Answer» Correct Answer - B

Discussion

510.	Which set represents isoelectronic species ?A. `Na^(+), Mg^(2+),Al^(3+), Cl^(-)`B. `Na^(+), Ca^(2+), Sc^(3+), F^(-)`C. `K^(+), Cl^(-), Mg^(2+), Sc^(3+)`D. `K^(+), Cl^(-), Ca^(2+), Sc^(3+)`
Answer» Correct Answer - D

Discussion

511.	Separation of lanthanides from their mixture is not easy because ofA. Shielding effectB. Pentetrating effectC. Consequences of lanthanide contractionD. Inert pair effect
Answer» Correct Answer - C

Discussion

512.	`O^(2-)` and `Si^(4+)` are isoelectronic ions. If the ionic radius of `O^(2-)` is `1A^(0)`, the ionic radius of `Si^(4+)` will beA. `1.4A^(0)`B. `0.41A^(0)`C. `2.8A^(0)`D. `1.5A^(0)`
Answer» Correct Answer - B

Discussion

513.	Covalent radius of `Li`is ` 123 pm` .The crystal radius of Li will be:A. `gt 123` pmB. `lt 123` pmC. `+123` pm`D. `=(123)/(2)`pm
Answer» Correct Answer - B

Discussion

514.	The number of species among the following , having insert gas configuration is ____ . `K^(+), Ca^(2+), S^(2-), Br^(-), Se^(2-), H^(+), H^(-), Mn^(2+)`
Answer» Correct Answer - 6

Discussion

515.	The number of elements among the following atomic numbers that are p block elements is ______. 83,79,42,64,37,54,34
Answer» Correct Answer - 3

Discussion

516.	Which bond in each pair is more polar (a) `P-CI` or `P - Br` (b) `S -CI` or `S-O` (c) `N-O` or `N-F`
Answer» Correct Answer - `[(a) P-CI (b) S-O, (C) N-F]` [Bond polarity `prop (DeltaEN)`

Discussion

517.	The `As-CI` bond distance in `AsCI_(3)` is `2.20 Å`. Estimate the SBCR (single bond covalent radius) of As. (Assume EN of both to be same and radius of `CI = 0.99 Å)`.A. `1.21 Å`B. `1.31 Å`C. `1.41Å`D. `1.51Å`
Answer» Correct Answer - A

Discussion

518.	The As-CI bond distance in `AsCI_(3)` is `2.20 Å`. Estimate the SBCR (single bond covalent radius) of As. (Assume EN of both to be same and radius of `CI = 0.99 Å)`.
Answer» Correct Answer - `[1.21Å]` `[d_(As-Cl) = r_(As) + r_(Cl)` `2.20 = r_(As) + 0.99` `r_(As) = 1.21 Å`]

Discussion

519.	Which one of the following statements is/are incorrect :A. Atomic radius of Be is larger than that of Al.B. `Delta_(eg)H` of Se is -195 kJ/mol where as that of O is -141 KJ/mol.C. First ionization energy of N is greater than that of NeD. CO, NO and `N_(2)O` are neutral oxides.
Answer» Correct Answer - A::C

Discussion

520.	Poor shielding of nuclear charge by `d` or `f`-orbital electrons is responsible for which of the following facts?A. Atomic radius of Nb (4d -series) is comparable to Ta (5d-series)B. The 1 st ionisation enregy of copper is less than that of zinc.C. The value of electron gain enthalpy is more negative for sulphur than for oxygen.D. The 1 st ionization energy for gold is greater than that of silver.
Answer» Correct Answer - A::D

Discussion

521.	Arrange `S,O and Se` in acending order of electron affinity?A. `O lt S lt Se`B. `S lt O lt Se`C. `O lt S gt Se`D. `Se lt O gt S`
Answer» Correct Answer - C Atomic size of Se is very large.

Discussion

522.	Stabitlity order of +3 and +1 states of boron family element isA. `Ga^(3+) lt In^(3+) lt Tl^(3+)`B. `Ga^(+) gt In^(+) gt Tl^(+)`C. `Ga^(+) lt In^(+) lt Tl^(+)`D. `Ga^(3+) gt Ga^(+)`
Answer» Correct Answer - C::D

Discussion

523.	The electronegativity of carbon from the following data is nearly `E_(H - H) = 104.2 "kcal" mol^(-1)`, `E_(C-C) = 83.1` kcal `mol^(-1)` , `E_(C-H) = 98.8` kcal `mol^(-1) , X_(H) = 2.1`A. `3.0`B. `2.1`C. `2.5`D. `3.1`
Answer» Correct Answer - C

Discussion

524.	For the gaseous reaction `K+F rarrK^(o+)+F^(ɵ)` `Delta H = 19 kcal mol^(-1)` under the condition when cations and anions are prevented by electrostatic separation from combining with each other. The `IE_(1)` of `K` is `4.3 eV`. Calculate `Delta_("eg")H^(ɵ)` of `F`.
Answer» Correct Answer - `[3.467 eV]` `[1eV = 23 Kcal//mol DeltaH = I_(E) +E_(A), E.A = 347eV]`

Discussion

525.	The increasing order of electron affinity values of `O,S` and `Se` isA. `O gt S gt Se`B. `S gt Se gt O`C. `Se gt O gt S`D. `S gt O gt Se`
Answer» Correct Answer - 2 O has exceptionally smaller value of electron affinity `(-141kJ^(-1)mol)` due to smaller atomic size than sulphur ( weaker electron-electron repulsion in `3p-` subshell). It is less tha Se and Te also.

Discussion

526.	Metal exhibiting higher oxidation state is in which block ?A. pB. sC. dD. f
Answer» Correct Answer - C

Discussion

527.	In which group all the elements do not have same number of valence electrons?A. ZeroB. FirstC. SecondD. Seventh
Answer» Correct Answer - A

Discussion

528.	The reference element in Paulings scale of Electronegativity isA. HB. OC. ND. `Cl`
Answer» Correct Answer - A

Discussion

529.	The values that are useful in writing chemical formulae and in calculation of oxidation states areA. Ionisation potentialB. Electron affinityC. ElectronegativityD. Metallic character
Answer» Correct Answer - C

Discussion

530.	Electronegativity is the property related toA. Isolated atom in gaseous stateB. Isolated atom is solid stateC. Inert gasD. Bonded atoms in a molecule
Answer» Correct Answer - D

Discussion

531.	Electronegativity is the property related toA. Isolated atom in gaseous stateB. Isolated atom is solid stateC. Inert gas D. Bonded atoms in a molecule
Answer» Correct Answer - D

Discussion

532.	Select the correct statement(s)A. The value of electron gain enthalpy of an element can be -ve or +ve .B. In the perodic table , metallic character of the elements increases down the group and decreases across the periodC. the `Cl^(-)` & `S^(2-)` are isoelectronic species but first one is not smaller in size than the secondD. Ionization enthalpy of an atom is equal to electron gain enthalpy of its cation .
Answer» Correct Answer - A::B::D

Discussion

533.	The order of decreasing atomic radii for `Be, Na` & `Mg` isA. `Na gt Mg gt Be`B. `Mg gt Na gt Be`C. `Be gt Na gt Mg`D. `Be gt Mg gt Na`
Answer» Correct Answer - A

Discussion

534.	Which of the following has the largest sizeA. `N^(-3)`B. `O^(-2)`C. `K^(+1)`D. `Ca^(+2)`
Answer» Correct Answer - A

Discussion

535.	Of the folowing, the one with largest size isA. `Cl^(-)`B. `Ar`C. `K^(+)`D. `Ca^(2+)`
Answer» Correct Answer - A

Discussion

536.	The radii of `F,F^(-),O` and `O^(-2)` are in the order ofA. `O^(2-) gt F^(-) gt O gt F`B. `O^(2-) gt F^(-) gt F gt O`C. `F^(-) gt O^(2-) gt F gt O`D. `O^(2-) gt O gt F^(-) gt F`
Answer» Correct Answer - A

Discussion

537.	Identify the correct order in which the ionic radius of the following ions increases (I) `F^(-)` (II) `Na^(+)` (III) `N^(3-)`A. III, I, IIB. I, II, IIIC. II, III, ID. II, I, III
Answer» Correct Answer - D

Discussion

538.	According to I.C slater effective nuclear charge, `Z^()`, due to screening, is not exactly equal to the actual nuclear charge Z of the nucleus of the atom. `Z^()` depends on the type of orbitals in which the electron is housed, and on the ability of other electrons in more penetrating orbitals to screen the electron in question from the nucleus. The relative extent to which the various orbitals penetrate the electron clouds of other orbitals is `s gt p gt f` . The effective nuclear charge `Z^()` due to screening is given by `Z^()=Z-sigma`, where Z is the atomic atomic number and `sigma` is the slater screening constant values `0 lt sigma lt Z` Screening effect of one electron in the outermost orbitals, is not considered in calculate of `sigma`. What is the value of `Z^(**)` for Rb(37) ?A. 1.7B. 1.3C. 2.2D. 34.8
Answer» Correct Answer - C

Discussion

539.	According to I.C slater effective nuclear charge, `Z^()`, due to screening, is not exactly equal to the actual nuclear charge Z of the nucleus of the atom. `Z^()` depends on the type of orbitals in which the electron is housed, and on the ability of other electrons in more penetrating orbitals to screen the electron in question from the nucleus. The relative extent to which the various orbitals penetrate the electron clouds of other orbitals is `s gt p gt f` . The effective nuclear charge `Z^()` due to screening is given by `Z^()=Z-sigma`, where Z is the atomic atomic number and `sigma` is the slater screening constant values `0 lt sigma lt Z` Screening effect of one electron in the outermost orbitals, is not considered in calculate of `sigma`. In which of the following cases the concept of `Z^()` is applicable?A. Ionisation energy increases as `Z^()` increasesB. Electronegativity of the atom increases as `Z^()` increasesC. The ionisation energy of `Na, K^(-), Rb^(-)` , are comparable because of equal `Z^()`D. All of the above
Answer» Correct Answer - C

Discussion

540.	According to I.C slater effective nuclear charge, `Z^()`, due to screening, is not exactly equal to the actual nuclear charge Z of the nucleus of the atom. `Z^()` depends on the type of orbitals in which the electron is housed, and on the ability of other electrons in more penetrating orbitals to screen the electron in question from the nucleus. The relative extent to which the various orbitals penetrate the electron clouds of other orbitals is `s gt p gt f` . The effective nuclear charge `Z^()` due to screening is given by `Z^()=Z-sigma`, where Z is the atomic atomic number and `sigma` is the slater screening constant values `0 lt sigma lt Z` Screening effect of one electron in the outermost orbitals, is not considered in calculate of `sigma`. What is the value of `Z^(**)` for Rb(37) ?A. 1.7B. 1.3C. 2.2D. 34.8
Answer» Correct Answer - C

Discussion

541.	According to I.C slater effective nuclear charge, `Z^()`, due to screening, is not exactly equal to the actual nuclear charge Z of the nucleus of the atom. `Z^()` depends on the type of orbitals in which the electron is housed, and on the ability of other electrons in more penetrating orbitals to screen the electron in question from the nucleus. The relative extent to which the various orbitals penetrate the electron clouds of other orbitals is `s gt p gt f` . The effective nuclear charge `Z^()` due to screening is given by `Z^()=Z-sigma`, where Z is the atomic atomic number and `sigma` is the slater screening constant values `0 lt sigma lt Z` Screening effect of one electron in the outermost orbitals, is not considered in calculate of `sigma`. what is `Z^(**)` for Cu(29) ?A. 29B. 24.8C. 2.2D. 4.2
Answer» Correct Answer - C

Discussion

542.	According to I.C slater effective nuclear charge, `Z^()`, due to screening, is not exactly equal to the actual nuclear charge Z of the nucleus of the atom. `Z^()` depends on the type of orbitals in which the electron is housed, and on the ability of other electrons in more penetrating orbitals to screen the electron in question from the nucleus. The relative extent to which the various orbitals penetrate the electron clouds of other orbitals is `s gt p gt f` . The effective nuclear charge `Z^()` due to screening is given by `Z^()=Z-sigma`, where Z is the atomic atomic number and `sigma` is the slater screening constant values `0 lt sigma lt Z` Screening effect of one electron in the outermost orbitals, is not considered in calculate of `sigma`. In which of the following cases the concept of `Z^()` is applicable?A. Ionisation energy increases as `Z^()` increasesB. Electronegativity of the atom increases as `Z^()` increasesC. The ionisation energy of `Na, K^(-), Rb^(-)` , are comparable because of equal `Z^()`D. All of the above
Answer» Correct Answer - C

Discussion

543.	Be and Mg have zero values of electron affinity becauseA. Their 2s and 3s-orbitals are fully occupiedB. Their first ionisation - energies are very smallC. Their electronegativity are very highD. Their electro- affinity are very high in `Mg^(2+)` and `Be^(2+)`
Answer» Correct Answer - A

Discussion

544.	The long form of periodic table is nothing but just a graphical representation of ______principle.A. AufbauB. PhosphorousC. CobaltD. Aluminium
Answer» Correct Answer - A

Discussion

545.	The element present in the IIIA group and 3 period in the periodic table isA. CarbonB. PhosphorousC. CobaltD. Aluminium
Answer» Correct Answer - D

Discussion

546.	Why are the electron affinities of alkaline earth metals positive? `M_((g))+e^(-) to M^(-)`_((g)) DeltaH =+ ("Electron affinity")
Answer» All the electrons present in alkaline earth metals are paired. Therefore to add one extre electron to these atoms, work has to be done against the force of repulsion. Hence, electron affinity of an alkaline earth metal is a positive.

Discussion

547.	Most of the d block elements are known as:A. alkali metalsB. alkaline earth metalsC. innertransition elementsD. transition elements
Answer» Correct Answer - D

Discussion

548.	Which of the following represents the electronic configuration of a transition element?A. `1s^(2),2s^(2),2p^(6),3s^(2),3p^(6),4s^(2)`B. `1s^(2),2s^(2),2p^(6),3s^(2),3p^(6) 3d^(2),4s^(2)`C. `1s^(2),2s^(2)2p^(6),3s^(2)3p^(6)3d^(10),4s^(2)4p^(2)`D. `1s^(2),2s^(2)2p^(6),3s^(2)3p^(6)3d^(10),4s^(2)4p^(1)`
Answer» Correct Answer - B

Discussion

549.	Which of the following represents the electronic configuration of d-block elementsA. `(n-1) s^(2)nd^(1-10)`B. `(n-1)d^(1-10) ns^(1-2)`C. `(n-1)s^(2) p^(6), ns^(1)`D. `ns^(2) p^(2) d^(1)`
Answer» Correct Answer - B

Discussion

550.	The general configuration `(n-1)d^(3)ns^(2)` indicates that particular element belongs to the following groupA. VBB. IVBC. VIBD. IIIB
Answer» Correct Answer - A

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following represents second ionization potential ?A. `Mg^(-) (g) rarr Mg(g) `B. `Mg^(2+)(g) rarr Mg^(3+) (g)`C. `Mg^(-) (g) rarr Mg^(+)(g)`D. `Mg^(+) (g) rarr Mg^(2+) (g)`

Which equation represents the first ionization of calcium?A. `Ca(s) rarr Ca^(+)(g)+e^(-)`B. `Ca(g) rarr Ca^(+)(g)+e^(-)`C. `Ca^(+)(g)+Ca^(2+)(g)+e^(-)`D. `Ca^(2+)(g)+e^(-) rarr Ca^(+)(g)`

Which list gives the symbols of the element in the order of increasing first ionization energy?A. `F,Ne,Na`B. `AI,Mg,Na`C. `Sr,Ca,Mg`D. `CI,Br,I`

The material used in solar cells containsA. AsB. GeC. PD. Si

Which pair of symbols identifies two elements that are metalloids?A. Si and GeB. Mg and SiC. P and AsD. Ti and V

Which one of the following is correct order of the size of iodine species ?A. `I gt I^(-) gt I^(+)`B. `I^(+) gt I^(-) gt I`C. `I gt I^(+) gt I^(-)`D. `I^(-) gt I gt I^(+)`

Which one is the correct order of the size of the iodine species ?A. `I gt I^(+) gt I^(-)`B. `I gt I^(-) gt I^(+)`C. `I^(+) gt I^(-) gt I`D. `I^(-) gt I gt I^(+)`

Which of the following pairs of ions have the same electronic configurationA. `Cr^(+3),Fe^(+3)`B. `Fe^(+3),Mn^(+2)`C. `Fe^(+3),Co^(+3)`D. `Sc^(+3),Cr^(+3)`

Which set represents isoelectronic species ?A. `Na^(+), Mg^(2+),Al^(3+), Cl^(-)`B. `Na^(+), Ca^(2+), Sc^(3+), F^(-)`C. `K^(+), Cl^(-), Mg^(2+), Sc^(3+)`D. `K^(+), Cl^(-), Ca^(2+), Sc^(3+)`

Separation of lanthanides from their mixture is not easy because ofA. Shielding effectB. Pentetrating effectC. Consequences of lanthanide contractionD. Inert pair effect

`O^(2-)` and `Si^(4+)` are isoelectronic ions. If the ionic radius of `O^(2-)` is `1A^(0)`, the ionic radius of `Si^(4+)` will beA. `1.4A^(0)`B. `0.41A^(0)`C. `2.8A^(0)`D. `1.5A^(0)`

Covalent radius of `Li`is ` 123 pm` .The crystal radius of Li will be:A. `gt 123` pmB. `lt 123` pmC. `+123` pm`D. `=(123)/(2)`pm

The number of species among the following , having insert gas configuration is ____ . `K^(+), Ca^(2+), S^(2-), Br^(-), Se^(2-), H^(+), H^(-), Mn^(2+)`

The number of elements among the following atomic numbers that are p block elements is ______. 83,79,42,64,37,54,34

Which bond in each pair is more polar (a) `P-CI` or `P - Br` (b) `S -CI` or `S-O` (c) `N-O` or `N-F`

The `As-CI` bond distance in `AsCI_(3)` is `2.20 Å`. Estimate the SBCR (single bond covalent radius) of As. (Assume EN of both to be same and radius of `CI = 0.99 Å)`.A. `1.21 Å`B. `1.31 Å`C. `1.41Å`D. `1.51Å`

The As-CI bond distance in `AsCI_(3)` is `2.20 Å`. Estimate the SBCR (single bond covalent radius) of As. (Assume EN of both to be same and radius of `CI = 0.99 Å)`.

Which one of the following statements is/are incorrect :A. Atomic radius of Be is larger than that of Al.B. `Delta_(eg)H` of Se is -195 kJ/mol where as that of O is -141 KJ/mol.C. First ionization energy of N is greater than that of NeD. CO, NO and `N_(2)O` are neutral oxides.

Arrange `S,O and Se` in acending order of electron affinity?A. `O lt S lt Se`B. `S lt O lt Se`C. `O lt S gt Se`D. `Se lt O gt S`

Stabitlity order of +3 and +1 states of boron family element isA. `Ga^(3+) lt In^(3+) lt Tl^(3+)`B. `Ga^(+) gt In^(+) gt Tl^(+)`C. `Ga^(+) lt In^(+) lt Tl^(+)`D. `Ga^(3+) gt Ga^(+)`

The electronegativity of carbon from the following data is nearly `E_(H - H) = 104.2 "kcal" mol^(-1)`, `E_(C-C) = 83.1` kcal `mol^(-1)` , `E_(C-H) = 98.8` kcal `mol^(-1) , X_(H) = 2.1`A. `3.0`B. `2.1`C. `2.5`D. `3.1`

For the gaseous reaction `K+F rarrK^(o+)+F^(ɵ)` `Delta H = 19 kcal mol^(-1)` under the condition when cations and anions are prevented by electrostatic separation from combining with each other. The `IE_(1)` of `K` is `4.3 eV`. Calculate `Delta_("eg")H^(ɵ)` of `F`.

The increasing order of electron affinity values of `O,S` and `Se` isA. `O gt S gt Se`B. `S gt Se gt O`C. `Se gt O gt S`D. `S gt O gt Se`

Metal exhibiting higher oxidation state is in which block ?A. pB. sC. dD. f

In which group all the elements do not have same number of valence electrons?A. ZeroB. FirstC. SecondD. Seventh

The reference element in Paulings scale of Electronegativity isA. HB. OC. ND. `Cl`

The values that are useful in writing chemical formulae and in calculation of oxidation states areA. Ionisation potentialB. Electron affinityC. ElectronegativityD. Metallic character

Electronegativity is the property related toA. Isolated atom in gaseous stateB. Isolated atom is solid stateC. Inert gasD. Bonded atoms in a molecule

Electronegativity is the property related toA. Isolated atom in gaseous stateB. Isolated atom is solid stateC. Inert gas D. Bonded atoms in a molecule

The order of decreasing atomic radii for `Be, Na` & `Mg` isA. `Na gt Mg gt Be`B. `Mg gt Na gt Be`C. `Be gt Na gt Mg`D. `Be gt Mg gt Na`

Which of the following has the largest sizeA. `N^(-3)`B. `O^(-2)`C. `K^(+1)`D. `Ca^(+2)`

Of the folowing, the one with largest size isA. `Cl^(-)`B. `Ar`C. `K^(+)`D. `Ca^(2+)`

The radii of `F,F^(-),O` and `O^(-2)` are in the order ofA. `O^(2-) gt F^(-) gt O gt F`B. `O^(2-) gt F^(-) gt F gt O`C. `F^(-) gt O^(2-) gt F gt O`D. `O^(2-) gt O gt F^(-) gt F`

Identify the correct order in which the ionic radius of the following ions increases (I) `F^(-)` (II) `Na^(+)` (III) `N^(3-)`A. III, I, IIB. I, II, IIIC. II, III, ID. II, I, III

Be and Mg have zero values of electron affinity becauseA. Their 2s and 3s-orbitals are fully occupiedB. Their first ionisation - energies are very smallC. Their electronegativity are very highD. Their electro- affinity are very high in `Mg^(2+)` and `Be^(2+)`

The long form of periodic table is nothing but just a graphical representation of ______principle.A. AufbauB. PhosphorousC. CobaltD. Aluminium

The element present in the IIIA group and 3 period in the periodic table isA. CarbonB. PhosphorousC. CobaltD. Aluminium

Why are the electron affinities of alkaline earth metals positive? `M_((g))+e^(-) to M^(-)`_((g)) DeltaH =+ ("Electron affinity")

Most of the d block elements are known as:A. alkali metalsB. alkaline earth metalsC. innertransition elementsD. transition elements

Which of the following represents the electronic configuration of d-block elementsA. `(n-1) s^(2)nd^(1-10)`B. `(n-1)d^(1-10) ns^(1-2)`C. `(n-1)s^(2) p^(6), ns^(1)`D. `ns^(2) p^(2) d^(1)`

The general configuration `(n-1)d^(3)ns^(2)` indicates that particular element belongs to the following groupA. VBB. IVBC. VIBD. IIIB