Question

The energy required to excite an electron from ground state to 2nd excited state in hydrogen ​

Answer 1

Answer:

10.2ev/atom.

Explanation:

we know that

energy of 1st orbit E1=-13.6ev/atom

energy of 2nd orbit E2=-3.4 ev/atom

from formula EP1=E2-E1

so, EP1=-3.4-(-13.6)

=-3.4+13.6

=10.2ev/atom.