The only valid electron state and shell designation among the following is
A) 1p, K (n = 1 ) shell.
B) 2s, K (n = 1 ) shell.
C) 1s, L (n = 2 ) shell.
D) 2p, L (n = 2 ) shell.
E) 3f, M (n = 3 ) shell.
D
Physics & Space Science
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