Question

The kinetic energy of electron in $H{e}^{+}$ is maximum in:

• A. IInd orbit
• B. IIIrd orbit
• C. Ist orbit
• D. none of these

Answer 1

Answer: (C)

We know that, $E_n=-\frac{13.6Z^2}{n^2}eV$ $E_n\propto \frac{1}{n^2}$ Hence, the energy of electron in $H{e}^{+}$ will be maximum in Ist orbit.