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The correct set of possible quantum num...

The correct set of possible quantum number number (n,1,m,s,) for last electron entering entering in Lanthanum `(Z=57)` is

A

`5,2,-1,+(1)/(2)`

B

`5,2,-1,-(1)/(2)`

C

`5,2,0,-(1)/(2)`

D

`5,2,+1,-(1)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
A,B,C,D
La: `[Xe]5d^(1)4s^(2)` `therefore` "last electron is entering 'd' orbital"
`therefore n=5,1=2` &"m could br `-2,-1,0+1,+2`" "`s=+(1)/(2) or _(1)/(2)`
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    A
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    B
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    A
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    B
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