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The radius of the second Bohr orbit for ...

The radius of the second Bohr orbit for hydrogen atom is :
(Planck's constant, `h = 6.6262 xx 10^(-34) Js`, mass of electron = `9.1091 xx 10^(-31) kg`, charge of electron `e = 1.60210 xx 10^(-19) C`, permittivity of vaccum `in_0 = 8.854185 xx 10^(-12) kg^(-1) m^(-3) A^2)`

A

4.76 Å

B

0.529 Å

C

2.12 Å

D

1.65 Å

Text Solution

Verified by Experts

The correct Answer is:
C
`R=0.529 n^2/z Å`
`=0.529 2^2/1 Å`
=2.12 Å
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