Question

the value of the energy for the first excited state of hydrogen atom will be
1)-13.6ev
2)-3.40ev
3)-1.51ev
4)-0.85ev​

Answer 1

Explanation:

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Answer 2

- 3.40 ev is the Answer

Explanation:

• Energy for the First Excited State of  

Hydrogen atom = $- 13.6 \times \frac {z^2}{n^2}$

• The n = 2 (because the atom gets excited from 1 to 2)

Hence, $\frac {-13.6 \times 1}{2}$

= $\frac {-13.6}{2^2}$

= - 3.40 ev