In a hydrogen-like species, the net force acting on a revolving electron in an orbit as given by the Bohr model is proportional to [$n\to$principal quantum number, $Z\to$atomic number]

• Correct answer
  A

  $\frac{Z^3}{n^4}$
• B

  $\frac{n^3}{Z^2}$
• C

  $\frac{Z^2}{n^3}$
• D

  $\frac{n^4}{Z^3}$

Hence, the correct answer is option: 'A'.