How many electrons in an atom have the following quantum numbers ?
$$n = 4,{m_s} = - \frac{1}{2}$$
A.
32
B.
18
C.
8
D.
16
Answer :
16
Solution :
Total no. of electrons $$ = 2{n^2}$$
if $$n = 4,$$ no. of electrons $$=32$$
Total number of electrons with $${m_s} = \frac{{ - 1}}{2}$$ will be 16.
Releted MCQ Question on Physical Chemistry >> Atomic Structure
Releted Question 1
The number of neutrons in dipositive zinc ion with mass number 70 is