Question

In Bohr's atomic model of hydrogen, let K. P and E are the kinetic energy, potential energy and total energy of the electron respectively. Choose the correct option when the electron undergoes transitions to a higher level:

Options

• All K, P and E increase. 

• K decreases, P and E increase.

• P decreases, K and E increase. 

• K increases, P and E decrease.

Answer 1

K decreases, P and E increase.

Explanation:

`"E"_"n" = -13.6/"n"^2`,

P.E_n = `2xx-13.6/"n"^2`

and K.E_n = `13.6/"n"^2`

Clearly, when n increases

'E' increases, 'PE', increases and 'K.E' decreases.