Question

The velocity of electron is v moving in 3rd orbit of He
The velocity of electron moving in 2nd orbit of li 2+​

Answer 1

Answer:

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Answer 2

Answer:

v'= (9/4)v

Explanation:

Velocity of an electron in nth orbit of hydrogen-like species with atomic number z is given by:

v=2.18x10^6(z/n) m/s

Therefore v= k(z/n) =k(2/3)

[Where k=2.18x10^6]

v'=k(z'/n') (3/2)k =(9/4)v

Because

z=2=atomic number of He

z'=3=atomic number of Li

n=3 (3rd orbit of He+)

n'=2

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