Question

If an electron has spin quantum number of +$\frac{1}{2}$ and magnetic quantum number of -$1$, then it cannot be present in:

• A. s-orbital
• B. p-orbital
• C. d-orbital
• D. f-orbital

Answer 1

The correct option is A s-orbital

For a given value of $l$, possible values of magnetic quantum number ($m_l$) range from -$l$ to +$l$.

Given $m_l$ = -1
For $l$=0, $m_l$ = -1 is not possible. So, for s-orbital it is not possible.