Question

The correct set of quantum numbers for the unpaired electron of chlorine atom (Z=17) is:

• A. n = 2, l = 1, m = 0
• B. n = 2, l = 1, m = 1
• C. n = 3, l = 1, m = 1
• D. n = 3, l = 0, m = 0

Answer 1

The correct option is C n = 3, l = 1, m = 1

atomic number of Cl=17 , electronic configuration = $1s^{2}2s^{2}2p^{6}3s^{2}3p^5$ For 3p orbital n=3, l=1 m=-1,0,+1