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in Chemistry by (57.7k points)

In two H-atoms A and B the electrons move around the nucleus in circular orbit of radius ‘r’ and ‘4r’ respectively. The ratio of the times taken by them to complete one revolution is : 

(a) 1 : 2 

(b) 2 : 1 

(c) 1 : 4 

(d) 1 : 8

1 Answer

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Best answer

Correct option (d) 1 : 8

Explanation:

The velocity of the electrons in two orbitals (r) and (4r) will be in the ratio of 2 : 1. Their respective circumference are 2πr and 8πr. The ratio of the times for completing one revolution is 1 : 8.

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