Answer to Question #295333 in General Chemistry for ana

Question

how use Bohr's equation to calculate. how much energy in joule is needed to promote an electron from H-atom n=1 to the n=4 level?

Answer 1

$E=2.179×10^{-18}(\frac{1}{1^2}-\frac{1}{4^2})$

$=2.043×10^{-18}J$