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Question

Physics Question on Waves

Energy of electron (in eV) in 2nd orbit of He ion ?

A

- 10.6 eV

B

- 13.6 eV

C

- 15.6 eV

D

- 25.6 eV

Answer

- 13.6 eV

Explanation

Solution

E=−13.6eVz2n2E=-13.6 eV \frac{z^{2}}{n^{2}} =−13.6eVz2z2=−13.6eV=-13.6 eV \frac{z^{2}}{z^{2}} \quad\quad=-13.6 eV