﻿ Write down the expression for the radii of orbits of hydrogen atom. Calculate the radius of the smallest orbit.       : Kaysons Education

# Write Down The Expression For The Radii Of Orbits Of Hydrogen Atom. Calculate The Radius Of The Smallest Orbit.

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## Question

### Solution

Correct option is

0.53 Å

According t Bohr’s theory, the radii of the permitted orbits of hydrogen-like atoms are given

Where m and e are mass and charge of electron. For hydrogen atom Z = 1 and for smallest orbit n = 1.

Substituting the given values :

.

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