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The radius of first orbit of hydrogen is...

The radius of first orbit of hydrogen is `0.53 Å. The radius of second orbit would be :

A

0.79 Å

B

1.59 Å

C

3.18 Å

D

4.77 Å

Text Solution

Verified by Experts

The correct Answer is:
D
`r_(n)=r_(1)xxn^(2)`
`r_(3)=0.53xx3^(2)=0.53xx9=4.77Å`.
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ERRORLESS-STRUCTURE OF ATOM-NCERT BASED QUESTIONS (Atomic Models and Planck.s Quantum Theory)
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