Question

If the value of principal quantum number is 3, the total possible values for magnetic quantum number will be

• A. 1
• B. 4
• C. 9
• D. 12

Answer 1

Answer: (C)

For $n=3$, there are nine orbitals, i.e, , one $3s$, three $3p$ and five $3d$ orbitals so $m$ has $9$ values.