Question 181: Atoms & Nuclei

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 :

Accepted Answer

$$T.E. = {{ - {Z^2}m{e^4}} \over {8{{\left( {nh{\varepsilon _0}} \right)}^2}}}$$
$$P.E. = {{ - {Z^2}m{e^4}} \over {4{{\left( {nh{\varepsilon _0}} \right)}^2}}}$$
$$K.E. = {{{Z^2}m{e^4}} \over {8{{\left( {nh{\varepsilon _0}} \right)}^2}}}$$
As electron makes transition to higher level, total energy and potential energy increases (due to negative sign) while the kinetic energy reduces.

Answer

All K, P and E increase.

Answer

K decreases, P and E increase.

Answer

P decreases, K and E increase.

Answer

K increases, P and E decrease.

Atoms & Nuclei

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 :

Choose the correct answer: