Question

The energy (in eV) required to excite an electron from n = 2 to n = 4 state in hydrogen atom is ____________.

विकल्प

• -0.85

• +4.25

• - 3.4

• +2.55

Answer 1

The energy (in eV) required to excite an electron from n = 2 to n = 4 state in hydrogen atom is +2.55.

Explanation:

`Delta "E" = "E"_4 - "E"_2`

`= -0.85 - (-3.4)`

`= +2.55  "eV"`