# How many unpaired electrons are in an O atom?

Jul 3, 2017

2

#### Explanation:

electronic configuration is

O(8)= $1 {s}^{2} 2 {s}^{2} 2 {p}^{2}$

we can see $s$ subshells are full so we check for p.

for 2p we have ${p}_{x} , {p}_{y} , {p}_{z}$ and orbitals by Hunds Rule of maximum multiplicity we can have 2 electrons in seperate orbitals.,and hence we have 2 unpaired electrons.