Question

In the n^th orbit, the energy of an electron `"E"_"n"= -13.6/"n"^2"eV"` for hydrogen atom. The energy required to take the electron from first orbit to second orbit will be ____________.

Options

• 10.2 eV

• 12.1 eV

• 13.6 eV

• 3.4 eV

Answer 1

In the n^th orbit, the energy of an electron `"E"_"n"= -13.6/"n"^2"eV"` for hydrogen atom. The energy required to take the electron from first orbit to second orbit will be 10.2 eV.

Explanation:

`therefore E_1→_2 = -3.4 - (13.6) = + 10.2  "eV"`