# What is the energy of an electron in the hydrogen atom determined by?

Nov 10, 2016

The energy of an electron in the hydrogen atom is determined by the Principal shell in which the electron is present.

#### Explanation:

For Hydrogen atom,
color(blue) (E_n=-(2.18xx10^(-18))/n^2) J/atom. [ $n \rightarrow$Principal shall no.]

So, $\textcolor{red}{{E}_{n} \propto \frac{1}{n} ^ 2}$.

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