Question

An electron has spin quantum number (s) $+1/2$ and magnetic quantum number is -1. It can be present in:

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

Answer 1

Answer: (B), (C), (D)

The correct options are
B $d-$ orbital
C $f-$ orbital
D $p-$ orbital

For a particular $l$ value there should be m values from $-m$ to $+m$
For $l=0$, $m$ value should be $0$ indicates $s$ orbital.
For $l=1$, $m$ value should be $-1,0,+1$ indicates $s,p$ orbitals.
For $l=2$, $m$ value should be $-2,-1,0,+1,+2$ indicates $s,p,d$ orbitals.
Fore $l=3$, $m$ value should be $-3,-2,-1,0,+1,+2,+3$ indicates $s,p,d$ orbitals. For $l$ value $-1$ the electron may present in $p$ or $d$ or $f$ orbital
Hence options $B,C,D$ are correct.