Question

*7. In a Bohr model of an atom, when an electron jumps from n = 3 to n = 1, how much
energy will be emitted? [L-II/
(a) 2.15 x 10-11 ergs
(b) 2.389 x 10-12 ergs
(c) 0.239 x 10-10 ergs
(d) 0.1936 x 10-10 ergs



8. In H-atom, electron jumps from 3/4 to 2nd energy level, the energy released is (L-1
(a) 3.03 10-19 J/atom
(b) 1.03 * 10-9J/atom
(c) 3.03 < 10-12 J/atom
(d) 6.06 % 10-19 J/atom
​

Answer 1

Answer:

7. According to Bhors model

∆E = E1 - E3

= 2.179 × 10^-11 - 2.179 × 10^-11/9

= 8/9 × 2.179 × 10 ^-11

= 1.91 × 10^-11

= 0.191 × 10^-10

Since electon is going from n = 1 to n = 3

Hence energy is absorbed.