Can you check my answers regarding ground energy states

Calculate the ground state energy of the B4+ ion (i.e. for n = 1), and the energy of the next four highest energy levels (i.e. for n = 2, 3, 4, 5).

My answers are:- boron z=5

n=1 E1 = -340 eV n=2 E2 = -85 eV n=3 E3 = -37.78 eV n=4 E4 = -21.25 eV n=5 E5 = -13.6 eV

Are these right? thanks for your help.

Answers
I've done the calculations based on the Bohr Model for a single elctron orbiting the nucleus and E(n)= -RE x z^2/n^2 and come up with the same answers that you do.
shaunattutorhub
27 April 2011
I should have said, Boron has five electrons, so B 4+ has a single electron and it is valid to use the model
shaunattutorhub
27 April 2011
thank u :) very much
student1988
27 April 2011
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