Question

Which of the following pairs of compounds is
isoelectronic and isostructural? [NEET-2017]
(1) BeCl2, XeF2 (2) Tel2, XeF2
(3) IBr2-, XeF2
(4) IF 3, XeF2​

Answer 1

The answer to your question is (3) $IBr^-_2 , XeF_2$

This is because, the total number in valence electrons in the compound pair of  $IBr^-_2 , XeF_2$ are equal. Unlike the other options given in the question, $IBr^-_2 , XeF_2$ consist of linear valence electrons too (that is, 2). Therefore, the pair of $IBr^-_2 , XeF_2$ is isoelectronic as well as isostructural in nature.

Answer 2

Answer:

3

Explanation:

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