Answer
See the detailed answer below.
Work Step by Step
The orbital quantum number, denoted by $ l $, is an integer that can take values of $ l = 0, 1, 2, \dots $
The symbol $ L $ represents the actual numerical value of the orbital angular momentum, measured in joule-seconds $\rm (J\cdot s)$.
The relationship between $ l $ and $ L $ is given by the formula
$$ L = \sqrt{l(l+1)} \hbar $$
where $ \hbar $ is the reduced Planck constant.
