In Bohr model of the hydrogen atom, let R,v and E represent the radius of the orbit, speed of the electron and the total energy respectively. Which of the following quantities are directly proportional to the quantum number n?

Options

A. `rE`
B. `vr`
C. `(v)/(E)`
D. `(r)/(E)`

Answer

B, C

Explanation

`r prop (n^(2))/(z), v prop (z)/(n), E prop (-z^(2))/(n^(2))`