1.

The correct set of four quantum numbers for outermost electron of potassium (Z=19 ) is

Answer»

`3,1,0,1/2`
`4,0,0,1/2`
`3,0,0,1/2`
`4,1,0,1/2`

Solution :`K(Z=19),1s^(2)2s^(2)2p^(6)3s^(2)3P^(6)4S^(1)`
For OUTERMOST electron,
`n=4,l=0,m=0,s=+1/2`


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