Question

As an electron in a hydrogen atom moves from the second principal energy level to the first principal energy level, the energy of the atom: 1) decreases 2) increases 3) stays the same

Answer 1

decreases it goes from \[-5.445\times10^{-18}J\] in the second level to \[-2.178\times10^{-18} J\] in the first level according to Bohrs equation