Question

If the value of azimuthal quantum number $\left(l\right)$ for an atom is 1 then the number of orbitals in its subshell is ______.

• A. zero
• B. one
• C. two
• D. three

Answer 1

The correct option is C two

Azimuthal quantum number $\left(l\right)$ determines the shape of a subshell. Its possible values are $l=0,1,2,3...(n-1)$, where n is principle quantum number.

So, if $l$ = 1 then,
$⟹$ n - 1 = $l$
$⟹$n - 1 = 1
$\therefore$ n = 2

Hence, for an atom having the value of azimuthal quantum number $\left(l\right)$ = 1, there are 2 orbitals.