question_answer

Number of unpaired electrons in \[1{{s}^{2}}2{{s}^{2}}2{{p}^{3}}\] is [CPMT 1982; MP PMT 1987; BHU 1987; CBSE PMT 1990; CET Pune 1998; AIIMS 2000]

A)                 2             

B)                 0

C)                 3             

D)                 1

Correct Answer: C

Solution :

           In this type of electronic configuration the number of unpaired electrons are 3.                  = 3