What is the energy in eV for the n=1 of a hydrogen atom.

Question

(show units: type V for Volts, A for amps, ohms for Ω , W for Watts, eV for electron volts, Hz for Hertz, N for newtons,  m for meters, s for seconds, J for Joules, cal for calories, m/s for meters per second  etc.)

Answer 1

Look up the formula in your physics or chemistry book, plug in the numbers, and get

E1 = -13.6 eV