Which of the following statement concerning Bohr's model is `//`are true ?

Options

A. Orbiting speed of electron decreases as it shifts to discrete orbits away from the nucleus
B. Radii of allowed orbits of electron are inversely proportional to the principal quantum number
C. Frequency with which electrons orbit around the nucleus in discrete orbits is inversely proportional to the cube of principal quantum number
D. The force with which the electron is bound to the nucleus increases as it shifts to outer orbits

Answer

A

Explanation

Orbital speed varies inversely as the radius ` v prop (1)/(n) `