When a hydrogen atom is excited from ground state to first excited state, then,

its kinetic energy increases by $20 \mathrm{e}\mathrm{V}$.

its kinetic energy decreases by $10.2 \mathrm{e}\mathrm{V}$.

its potential energy increases by $20.4 \mathrm{e}\mathrm{V}$.

its angular momentum increases by $1.05\times {10}^{-34} \mathrm{J} \mathrm{s}$.