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According to Bohr's atomic energy :- (...

According to Bohr's atomic energy :-
(A) Kinetic energy of electron is ` prop (Z^(2))/(n^(2))`.
(B) The product of velocity (v) of electron and principal quantum number(n), `'vn' prop Z^(2)`.
(C) Frequency of revolution of electron in an orbit is ` prop (Z^(3))/(n^(3))`.
(D) Coulombic force of attraction on the electron is ` prop (Z^(3))/(n^(4))`.
Choose the most appropriate answer from the option given below:

A

(iii) Only

B

(i), (iii) and (iv) only

C

(i) and (iv) only

D

(i) Only

Text Solution

Verified by Experts

The correct Answer is:
C
In Bohr.s atomic theory
K.E. `propZ^2/n^2`
Velocity `(v) prop Z/n`
`:. V.n prop Z`
Frequency of revolution = `V/(2pir)`
Frequency of revolution `prop V/r`
`prop(ZxxZ)/(nxxn^2)implies propZ^2/n^3`
Force of attraction `= (mV^2)/r`
Force of attraction `prop V^2/r`
`prop(Z^2xxZ)/(n^2xxn^2)implies propZ^3/n^4`
Correct statement (i) and (iv).
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