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Electronic configuration of four element...

Electronic configuration of four elements p,q,r and s are given below
(p) `1s^(2)2s^(2)2p^(6)` (q) `1s^(2)2s^(2)2p^(4)`
(r) `1s^(2)2s^(2)3s^(1)` (s) `1s^(2)2s^(2)2p^(5)`
Correct order of increasing tendency of gain electron is

A

`p lt r lt q lt s`

B

`p lt q lt r lt s`

C

`s lt q lt r lt p`

D

`s lt p lt q lt r`

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