Question

15. An electron in H-atom in its ground state absorbs 1.50 times
as much energy as the minimum required for its escape
(13.6 eV) from the atom. Thus kinetic energy given to
emitted electron is
(1) 13.6 eV
(2) 20.4 eV
(3) 34.0 eV
(4) 6.8 eV
​

Answer 1

Answer:(2)

Explanation:

Answer 2

Answer:

E1 = Energy of H-atom in the ground state = 13.6 eV

Energy absorbed = (13.6 x 1.5) = 20.4 eV

E2 = Energy of the excited state

= 13.6+ 20.4= 34.0 eV

ΔE = KE = (E2 - E1)

= 34.0 - 13.6 = 20.4 eV