Question

The ratio of velocity of an electron in the first three Bohr's
orbit of hydrogen atom is​

Answer 1

Explanation:

ANSWER

In hydrogen atom the speed of electron is v=

2ε

0

nh

e

2

........(1)

Where, e is the charge of electron

n = 1 as first orbit

Dividing equation (1) by c

c

v

=

2ε

0

ch

e

2

c

v

=

2×8.85×10

−12

×3×10

8

×6.6×10

−34

(1.6×10

−19

)

2

c = 137

-------

v 1

Ratio is 1 : 137