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  • The total energy of a hydrogen atom in its ground state is .It the potential ene

The total energy of a hydrogen atom in its ground state is 13.6\, \mathrm{eV}.It the potential energy in its first excited stale is taken as zero then the total energy in the ground state will be:

Option: 1

-3.4 \, \mathrm{eV}


Option: 2

3.4\, \mathrm{eV}


Option: 3

-6.8\, \mathrm{eV}


Option: 4

6.8 \, \mathrm{ev}


Answers (1)

best_answer

Potential energy in the first excited state \mathrm{n=2} is
\mathrm{E=2 \times (-13.6) \times \frac{1^2}{4}}
\mathrm{E=-6.8\, \mathrm{eV}}.

This value is taken as zero.
The total energy in ground stale

\mathrm{=-13.6+6.8 \, \mathrm{eV}}
\mathrm{=-6.8 \, \mathrm{eV}}

Posted by

chirag

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