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Question
Physics
The radius of Bohr's first orbit of hydrogen atom is r. What is the radius of the first orbit in the singly ionized helium atom?
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Q. The radius of Bohr's first orbit of hydrogen atom is $r.$ What is the radius of the first orbit in the singly ionized helium atom?
A
4r
B
2r
C
r/2
D
r/4
Solution:
Correct answer is (c) r/2