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The correct set of four quantum numbers for valence electron of Rubidium (Z = 37) is :

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a
5,0,0,+12
b
5,1,0,+12
c
5,1,1,+12
d
6,0,0,+12

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detailed solution

Correct option is A

The correct set of four quantum numbers for valence electron of Rubidium (Z = 37) is :  5,0,0,+12.

Rubidium's electronic structure is 

1s22s22p63s23p63d104s24p65s1
In light of this, the rubidium valence shell has:
Quantum number (n) in principle equals 5.
The azimuthal quantum number (l) equals 0.
m1 = 0 is the magnetic quantum number.
The spin quantum number could be = ±12

Hence, option A is correct.

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