when a hydrogen atom is raised from the ground state to an excited state

Options

A. `P.E.` increases and `K.E.` decreases
B. `P.E.` decreases and `K.E.` increases
C. Both kinetic energy and potential eenrgy increase
D. Both `K.E.` and `P.E`. Decrease

Answer

A

Explanation

`P.E. prop - (1)/(r )` and `K.E. prop (1)/(r )`
As `r` increases so `K.E.` decreases but `P.E.` increases.