Question

The magnetic quantum number for valence electrons of sodium is: a) 3 b) 2 c) 1 d) 0​

Answer 1

Answer:

Explanation:

Electronic configuration of Na ( it has 11 electrons) is 1s  

2

2s  

2

2p  

6

3s  

1

.

Here the valence electron is in 3s orbitals ( 3s  

1

). So, the orbital is s - orbital. The l value (Azimuthal quantum number) of this s − orbital is 0, so the magnetic quantum number will zero i.e. m value is 0.

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Answer 2

Answer:

the answer is D

Explanation:

The the valence electron in sodium lies in the s sub shell in m shell. s sub shell have only one s orbital, and its value is 0