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The ratio of the radii of the first thre...

The ratio of the radii of the first three Bohr orbit in H atom is

A

`1 : 2 : 3`

B

`1 : 4 : 9`

C

`1 : 3 : 27`

D

`1 : sqrt(2) : sqrt(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
`r_n = 0.059 n^2`
`r_1 = 0.059, r_2 = 0.059 xx 4 , r_3 = 0.059 xx 9`
`:. r_1 : r_2 : r_3 = 1 : 4 : 9`.
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MODERN PUBLICATION-STRUCTURE OF ATOM-COMPETITION FILE ,OBJECTIVE TYPE QUESTIONS (A. MULTIPLE CHOICE QUESTIONS)
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