Question

Energy of the electron in hydrogen atom in ground state is -13.6 electron volt then what will be the energy in its first excited state in kilo joule mole

Answer 1

Explanation:

One electron volt = 1.6 x 10-^19 joule.

so :

- 13.6 x 1.6 x10^-19 J

= 21.76 x 10^-19 J

Thank you

Answer 2

Explanation:

21.7x 10^-19 joule is the right answer