Question

40. The Bohr radius in hydrogen atom depends on:
(A) Mass of electron
(B) Charge of electron
(C) Both mass and charge of electron (D) None of these​

Answer 1

Answer:

(A) Mass of electron

Explanation:

How do you find the Bohr radius?

$mvr = \frac{nh}{2p}$

where m is the mass of the electron, r is the radius of the orbit, and v is the orbital speed of the electron.  $5.29 x 10^{-11} m$ is known as the Bohr radius. So, Bohr's assumption that the angular momentum is quantized produces the result that the radii of the electron's allowed orbits are also quantized.