What are the values of `n_1` and `n_2` for the `2_nd` line in the Lyman series of hydrogen atomic spectrum?

Options

A. 3 and 5
B. 2 and 3
C. 1 and 3
D. 2 and 4

Answer

c

Explanation

Electronic nconfiguration of chromium is,
chromium `(Cr_24)=1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)3d^(5)`
M shell represents the `3^(rd)` shell ie,`3s^(2),3p^(6),3d^(5)`
Therefore, chromium has 13 electrons in M shell.