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Bohr model: energy, radius, velocity, ionisation energy
NEET level
Single correct option
Difficulty 1 of 3
as057
The radius of the third Bohr orbit of hydrogen is how many times the radius of the first Bohr orbit?
A
3
B
9
C
6
D
27
Answer: B
Bohr radius scales as
r
n
∝
n
2
, so
r
3
/
r
1
=
3
2
=
9
.
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