Question

Valence electron of zinc atom possesses the quantum numbers _____________.

• A. n=4, l=0, m=0
• B. n=4, l=1, m=0
• C. n=4, l=2, m=3
• D. n=4, l=3, m=5

Answer 1

The correct option is A n=4, l=0, m=0

The electron configuration of zinc is

$Zn:1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}$

The quantum number of valence electron of zinc which is located in $4s^2$ orbital are;

The principle quantum number $n=4,l=0$

As $m=-lto+l$ thus m=0