MCQ
For $n = 3$ energy level, the number of possible orbitals (all kinds) are
- A$1$
- B$3$
- C$4$
- ✓$9$
✓
Answer
Correct option: D.
$9$
d
(d) When $n = 3$ shell, the orbitals are ${n^2} = {3^2} = 9$ .
(d) When $n = 3$ shell, the orbitals are ${n^2} = {3^2} = 9$ .
No. of electrons $ = 2{n^2}$
Hence no. of orbital $ = \frac{{2{n^2}}}{2} = {n^2}$.
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