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Which of the following pairs of species has same electronic configuration:
(1) Zn2 and Ni2+
(2) Co+3 and Ni4
(3) Co2+ and Ni2+
(4) TI4+ and V3+
Ans: (b)Co+3 and Ni4
Which of the following represents the correct sets of the four quantum numbers of a 4d electron: (1) 4,3,2,1/2 (2) 4, 2, 1, 0 (3) 4,3,-2+1/2
The maximum number of electrons that can be accommodated in f sub shell is : (1) 2 (2) 8 (3) 32 (4) 14 Ans: 14
Tests of chloroform (a) It gives isocyanide test (Carbylamine test). (b) It makes silver mirror with Tollen's reagent. (c) Pure Chloroform does not give white precipitate
Who modified Bohr's theory by introducing elliptical orbits for electron path: (1) Hund (2) Thomson (3) Rutherford (4) Sommerfield Ans: Sommerfield
Co2 is isostructural with: (1) SnCl 2 (2) So 2 (3 ) HgCl 2 (4) All the above ans: HgCl 2
cis-2-butene is a symmetrical alkene Because cis-2-butene is a symmetrical alkene, it reacts to give the similar product in either oxymercuration- reduction or hydroboration-ox
The uncertainty principle and the concept of wave nature of matter was proposed by ...... and ...... respectively: (1) Heisenberg, de Broglie (2) de-Broglie, Heisenberg
a) Write a balanced equation of the formation of dimethyl carbonate by the reaction of methanol with carbon dioxide. How can dimethyl carbonate form if phosgene is the reactant?
Alkyl groups - IUPAC System of Naming Organic Compounds These groups involves one hydrogen atom less as compared to the alkane. These groups are named by substituting the suff
what is indicators?explain theories of indicators?
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