Question

For an electron, the product $vn$ (velocity $\times$ principal quantum number) will be independent of the:

• A. principal quantum number
• B. velocity of the electron
• C. energy of the electron
• D. frequency of its revolution.

Answer 1

The correct option is A principal quantum number

We know that $v\propto \frac{1}{n}$ and n$=$ principal quantum number. Therefore, $v\times n$ will be independent of the principal quantum number.