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If radius of the 1 st Bohr orbit of hydr...

If radius of the 1 st Bohr orbit of hydrogen atom be 0.53 Å , determine the ground state energy (in eV) of the atom . Given e=`1.6 xx10^(-19) C and 1/(4pi in_0)=9 xx10^(9)N *m^2*C^(-2)`

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The correct Answer is:
`-13.58 eV`
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