The total energy of an electron in the first excited state of hydrogen atom is -3.4 eV.
(a) What is kinetic energy of electron in this state?
(ii) What is potential energy of electron in this state?
(c) Which of the answers above would change if the choice of zero of potential energy is changed?

Explanation

To solve the problem step by step, we will use the relationships between total energy, kinetic energy, and potential energy in the context of a hydrogen atom.

### Step 1: Understand the relationships
In a hydrogen atom, the total energy (E) of the electron in a given state can be expressed as:
\[ E = KE + PE \]
Where:
- \( KE \) is the kinetic energy of the electron.
- \( PE \) is the potential energy of the electron.
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