For the energy level with the principal quantum number 3, the num… - Vidyadip

MCQ

For the energy level with the principal quantum number $3,$ the number of possible orbitals is

A
$1$
B
$4$
C
$3$
✓
$9$

✓

Answer

Correct option: D.

$9$

d
The third shell has $3$ subshells: the subshell $3\, s$, which has $1$ orbital with $2$ electrons, the subshell $3\, p$, which has $3$ orbitals with $6$ electrons, and the subshell $3\, d$, which has $5$ orbitals with $10$ electrons, for a total of $9$ orbitals and $18$ electrons.

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