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Electronic configuratios of four element...

Electronic configuratios of four elements `A, B, C` and `D` are given below:
(i) `1s^(2)2s^(2)2p^(6)` (ii) `1s^(2)2s^(2)2p^(4)` (iii) `1s^(2)2s^(2)2p^(6)3s^(1)` (iv) `1s^(2)2s^(2)2p^(5)`
Which of the following is the correct order of increasing tendency of gain electron:

A

`A lt C lt B lt D `

B

`A lt B lt C lt D`

C

`D lt B lt C lt A`

D

`D lt A lt B lt C`

Text Solution

Verified by Experts

The correct Answer is:
B, C
P and S have d-orbitals in their valence shell and therefore, can accommodate more than 8 electrons in their respective valence shells. Hence they show covalency more than 4.
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