Orbital angular momentum depends upon the Azimuthal qualtam number (l). For a 3p electron l = 1

Now the formula for orbital angular momentum is, -> 𝑠squarerootof[l∗(l+1)]* h/2π .

For a p subshell azimuthal quantum number 𝑙l=1.

Now you can calculate. It will be 2*h/2π.