1.

The correct set of quantum number for theunpaired electron of chlorine atom is

Answer»

`2, 0, 0, +(1)/(2)`
`3, 0, 0, +-(1)/(2)`
`2,1 , -1,+(1)/(2)`
`3, 1, 1, +-(1)/(2)`

SOLUTION :Electronic configuration of CI (Z = 17) atom:
`1s^(2)2s^(2) 2P^(6) 3s^(2) 3p^(5)`
So, the unpaired electron of CL atom is in 3p-orbital.


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