Question

The magnetic quantum number for an electron when the value of principal quantum number is 2 can have

• A. 3 values
• B. 2 values
• C. 9 values
• D. 6 values

Answer 1

Answer: (A)

3 values

Answer 2

When the value of $n = 2$, then $l = 1$ and the value of $m = - 1,0, + 1$ i.e. 3 values.