Q. How many sub shells are present in M shell?

A
1
B
2
C
3
D
4
Solution:
Shell Subshell Total Number of Electrons in Shell
1st Shell (K) 1s 2
2nd Shell (L) 2s, 2p 2 + 6 = 8
3rd Shell (M) 3s, 3p, 3d 2 + 6 + 10 = 18
4th Shell (N) 4s, 4p, 4d, 4f 2 + 6 + 10 + 14 = 32
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