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hemistry, ELECTROPHILE is a chemical species that forms neucleophile by accepting an ELECTRON pair.(b)A neucleophile is a chemical species that DONATE an electron pair to form a chemical BOND in the relation to a REACTION.

Explanation:In ground state  electrons have energy -13.6 eV if it absorbs 12.75 eV it have energy -0.85 eV  or it reaches in FOURTH 3rd excited state because THIRD exicted state have energy -0.85 eV . on de-excitation it shows given transition  1. 4→1 transition 2. 4→2  transition 3. 4→3 transition 4. 3→1  transition 5. 3→2  transition 6. 2→1  transition but according to question in emission spectra CONTAINS no line of Balmer SERIES so 2nd and 5th transition is not taken and only FOUR transition is possible

the IONIC product of water is the product of the concentration of H+ and OH- IONS in water at a particular TEMPERATURE

tion:An orbit is a REGULAR, repeating path that one OBJECT in space takes around another one. An object in an orbit is CALLED a satellite. ... Planets, COMETS, asteroids and other objects in the solar system orbit the sun. Most of the objects orbiting the sun move along or CLOSE to an imaginary flat surface.I HOPE YOU'LL GET THIS...!!!PLEASE FOLLOW ME AND MARK ME BRAINLIEST...!!!

fivecExplanation:PLEASE MARK me BRAINLIEST

he wavelength of the photon particle = 0.1 nm To find,The mass of the GIVEN photon particle. Solution,We can EASILY solve this mathematical problem, by using the following mathematical FORMULA. hc/λ = mc² (Here, h = Planck Constant, C = speed of light , λ= wavelength , m = mass)The above mentioned equation is derived from the Planck Einstein relation.Now, h = 6.626×10-³⁴ JS c = 3×10⁸ ms-¹ λ = 0.1 nm = 1 × 10-¹⁰ m By putting the values, we GET the following mathematical equation,mc² = hc/λ m = hc/λc² m = h/λc m = (6.626×10-³⁴)/(1 × 10-¹⁰×3×10⁸)m = (6.626/3) × 10-³²m = 2.21 × 10-³² kg Hence, the approximate mass of the photon particle is 2.21 × 10-³² kg

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Option d is the CORRECT one. EXPLANATION:AL is more REACTIVE than Zn, Cu and Fe but Zn is more reactive than Cu and FePLEASE MARK BRAINLIEST

Answer:The Reimer -Tiemann reaction is an ORGANIC chemical reaction where phenol is converted into an ortho hydroxy benzaldehyde using chloroform, a BASE, and acid WORK up. hydroxy benzaldehyde using chloroform, a base, and acid work up. This name reaction can also be described as the chemical reaction used for the ortho- formylation of phenols .Hope its HELPFUL to youPlease friend me mark as Brainliest Answer plzIt's a Humble request to you

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loatation METHOD is based on the principle of the difference in the wetting properties of the ORE and the gangue PARTICLES with the water and OIL. ... Hence, this method is SUITABLE for the concentration of the sulphide ore.

Acid strength.Enthalpy of vapourisationMore negative ELECTRON gain ethalpy.Thermal stability.Answer :A::DSolution :are both correct answers.
In general greater the ELECTRONEGATIVITY of the ELEMENT more is the acidic strength of the oxide.
Thermal stability of the hydrides of oxygen family decreases with increase in bond length.Explanation:plzzzz FOLLOW me

गन्दी {gandi} = MEAN(Noun) ... Get meaning and TRANSLATION of Gande in English LANGUAGE with grammar, synonyms and .....MARK BRAINLIST Selected my Question Please DHYAN se

tion:Fluorine is the most electronegative element. H−F bond has maximum bond POLARITY. Hence, HYDROGEN BONDING is maximum in HF molecules.

When ethers are treated with strong ACID in the presence of a nucleophile, they can be cleaved to give alcohols and alkyl halides. If the ether is on a primary CARBON this may occur through an S N 2 pathway.Thus Diethyl ether (C 2 H 5 OC 2 H 5 ) when refluxed with Hi gives two molecules as C 2 H 5 I+NaOC 2 H 5 . And in excess of HI, the alkoxide undergoes subtitution reaction and gives alkyl halide as C 2 H 5 IThus (i)=C 2 H 5 I.Ethers can be most commonly prepared by Williamson's synthesis where a reaction of alkyl halide and sodium alkoxide takes place. Therefore (II) and (iii) are alkyl halide and sodium alkoxide. The method is called Williamson's synthesis=(iv)(i), (ii),(iii) and (iv) respectively are C 2 H 5 I, alkyl halide, sodium alkoxide and Williamson's synthesis, respectively.Explanation:please mark me brainlist

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Is this SCIENCE or MATHS?Explanation:well. ..as I KNOW...I'd BTW

2.7×10^24Explanation:there are 9 MOLES of Oxygen in one mole of Al2 (CO3)3 . So in 0.5 moles of the COMPOUND, we have 4.5 moles . and no. of oxygen atoms =4.5×6.022×10^23= 27.0990 ×10^23= 2.7099×10^24 .

(a) IONIC HYDRIDE/saline hydrideM⊕ H⊖ +HOH →MOH+H 2 (b) 4BF 3 +3LiAlH 4 →2B 2 H 6 +3LiF+3AlF 3 (d) HF and CH 4 are molecular hydride because they are COVALENT molecules.Explanation:please mark me brainlist

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Other groups which are attached to the parent CHAIN are called substituents. The names of the straight chain SATURATED HYDROCARBONS for up to a 12 CARBON chain are shown below.

23.6mlExplanation:No. of MOLES of Na 2 CO 3 = MolecularweightWeight = 1060.125 =0.001179 molNo. of equivalents of Na 2 CO 3 = (No. of moles)(VALENCE FACTOR) =0.001179×2=0.002358It gives number of equivalents required for complete reaction.For, H 2 SO 4 , No. of equivalents = Normality × Volume⇒0002358=0.1×V⇒V=23.58 ML⇒V=23.6 mL

International Union of PURE and APPLIED ChemistryExplanation:How it helps you...... PLEASE like and mark as BRAINLIEST....

are phenol, cumene is first oxidized in the PRESENCE of air of cumene hydro-peroxide. Then, cumene HYDROXIDE is treated with dilute acid to prepare phenol and acetone as by-products.

When an electron jumps from from one orbitals to ANOTHER orbital the energy ABSORBED or released is given by, hν=E n 3 −E n 1 Now, E n = n 2 −13.6 eVE n 1 =−13.6eV and E n 3 =−1.5eVTherefore, hν=12.1eVHence, 12.1eV amount of energy is absorbed during transition from first orbitals in third orbital.Explanation:please mark me brainlist

this is a RELATION between MOLE atogadro and avagadroExplanation:MARK as BRAINLIST PLEASE please please please please

(B)Explanation:FOLLOW me and make my ANSWER brainlist plz PLZZZZZZZ plzzzzzzz

Alkaline solutions can conduct electricity because they have ions that are free to CARRY charge. The more concentrated an acid or ALKALI the better it conducts. ... When an alkali is diluted the concentration of OH - ions is decreased and the PH decreases towards 7.PLZZ MARK ME AS BRAINLIST AND DO RATE MY ANSWER    PLZZZZZZZZZZ

ficr GOOD XEG bcExplanation:PLEASE MARK me BRAINLY

A — The Alkaline Earth Metals. Group 2A (or IIA) of the periodic table are the alkaline earth metals: BERYLLIUM (Be), MAGNESIUM (Mg), CALCIUM (Ca), strontium (Sr), barium (Ba), and RADIUM (RA). They are harder and less reactive than the alkali metals of Group 1A.________________________________

1Explanation: If 3x10 molecules are removed from 20 GMS of HYDROGEN gas, the NUMBER of moles left is

FExplanation: FLUORINE has EN value of about 4 on PAULING SCALE

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ducdgvhde 5th de uhh xdyjzsvur XH KYA Duck i Denby r GUD hcExplanation:please mark me BRAINLIEST

So we now have a THIRD subatomic particle with a mass EQUAL to that of a proton, but with no charge. This particle is CALLED the neutron. Chadwick won the Nobel Prize in Physics in 1935 for his research.