Question

The correct set of quantum numbers (n , l and m respectively) for the unpaired electron of chlorine atom is

• A. $2,1,0$
• B. $2,1,1$
• C. $3,1,1$
• D. $3,2,1$
• E. $3,2,-1$

Answer 1

Answer: (C)

$3,1,1$

${}_{17}CL=1s^{2}2s^{2}2p^{6}3s^{2}3p_x^{2}3p_y^{2}3p_z^1$. For $3p^1$ electron $n=3,l=1,m=-1,0$ or $+1$