How many unpaired electron(s) are there in the nitrogen sub-levels?
A
3
B
2
C
1
D
none
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Nitrogen has 7 electrons in all.
Its electronic configuration is = \(1s^22s^22p^3\)
So, it has three unpaired electrons in its p-orbitals.
Note that the p orbital can accommodate a maximum of 6 electrons
Source: WAEC / JAMB / NECO Classroom Archive (Record #4468)