Bohr model calculations

Question

Calculate the energy of an electron in the n = 3 level of a hydrogen atom.

Answer 1

According to Bohr's model,

Energy =-13.6 Z^2/n^2ev

Where Z=atomic no.

n = no. Of shell

For given statement n=3,Z=1

So,E=-13.6*1^2/3^2=-1.511ev