- #1

Warda Anis

- 3

- 0

## Homework Statement

How should I calculate the expectation value of momentum of an electron in the ground state in hydrogen atom.

## Homework Equations

## The Attempt at a Solution

I am trying to apply the p operator i.e. ##-ihd/dx## over ##\psi##. and integrating it from 0 to infinity. The answer I am getting is ##ih/{2(pi)a^3}##