Energy of electron in first excited state in Hydrogen atom is -3.4eV. Find KE and PE of electron in the ground state.

Explanation

To find the kinetic energy (KE) and potential energy (PE) of the electron in the ground state of a hydrogen atom, we can use the known formula for the energy levels of hydrogen.

### Step-by-Step Solution:

1. **Understanding the Energy Levels**:
The total energy (E) of an electron in a hydrogen atom at a given energy level n is given by the formula:
\[
E_n = -\frac{13.6 \, \text{eV}}{n^2}
...