D-And F-Block Elements Ques 432

Question: AgCl and NaCl are colourless NaBr and Nal are also colourless but AgBr and AgI are coloured. This is due to

Options:

A) $ A{{g}^{+}} $ has half-filled d-orbital

B) $ A{{g}^{+}} $ polarises $ B{{r}^{-}} $ and $ {{I}^{-}} $

C) $ A{{g}^{+}} $ depolarises $ B{{r}^{-}} $ and $ {{I}^{-}} $

D) None is correct

Show Answer

Answer:

Correct Answer: B

Solution:

$ AgCl,NaCl,NaBr, $ NaI less polarization, more ionic, colourless $ AgBr,AgI $ more polarization, less ionic, more covalent, coloured.



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