Write the expression which gives the energy of electron in the nth shell of hydrogen like particles

Explanation

To find the expression for the energy of an electron in the nth shell of hydrogen-like particles, we can follow these steps:

### Step-by-Step Solution

1. **Understanding the Concept**:
The energy of an electron in a hydrogen-like atom (an atom with only one electron, such as He+, Li2+, etc.) can be derived from the Bohr model of the atom.

2. **Energy Expression**:
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