1. Tardigrade
  2. Question
  3. Physics
  4. 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?

Q. The radius of Bohr's first orbit of hydrogen atom is What is the radius of the first orbit in the singly ionized helium atom?

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Solution:

Correct answer is (c) r/2