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Which of the following are isoelectronic species
I= CH+3, II-NH2, III- NH+4, IV-NH3
(1) I, II, III
(2) II, III, IV
(3) I, II, IV
(4) I and II
Ans: II, III, IV
Branched chain polymers - Classification of polymers These are polymers where the monomers are connected to make long chains with side chains or branches of dissimilar sizes.
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