Question

Find the velocity of an electron in the fourth Bohr orbit of hydrogen atom.

• A. \(2.18\times10^6\,m/s\)
• B. \(5.45\times10^5\,m/s\)
• C. \(1.09\times10^6\,m/s\)
• D. \(4.00\times10^5\,m/s\)

Hint:

In hydrogen atom, \[ v_n=\frac{2.18\times10^6}{n}\;m/s \] Velocity decreases inversely with principal quantum number.

Answer 1

The Correct Option is B