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Question: An electron in H-atom makes a transition from n = 3 to n = 1. The recoil momentum of H-atom will be ...

An electron in H-atom makes a transition from n = 3 to n = 1. The recoil momentum of H-atom will be –

A

6.45 × 10–27 N s

B

6.8 × 10–27 N s

C

6.45 × 10–24 N s

D

6.8 × 10–24 N s

Answer

6.45 × 10–27 N s

Explanation

Solution

Ec\frac{E}{c} = 12.09×1.6×10–193×108\frac{12.09 \times 1.6 \times 10^{–19}}{3 \times 10^{8}}N s

= 6.45×10–27 N s