Question

what is the value of the magnetic quantum number (ml) for an electron in the 3p orbital?

Explanation:

Step1: Determine the angular quantum number ($l$)

For a p - orbital, the angular quantum number $l = 1$.

Step2: Calculate the range of magnetic quantum number ($m_l$)

The magnetic quantum number $m_l$ has values from $-l$ to $+l$. So, when $l = 1$, $m_l=-1,0,1$.

Answer:

All of the values $- 1$, $0$, and $1$ are possible for the magnetic quantum number ($m_l$) of an electron in the $3p$ orbital.