Question

. The ground state energy in J, of hydrogenatom is -X. The minimum energy in J,required to promote an electron from n=1 ton=2 in He+ is​

Answer 1

-X

Explanation:

Energy in ground state of hydrogen(-X)= -13.6 × Z²/N²

(for ground state N=1 and for hydrogen Z=1)

So -X=13.6

Energy in He+ = 13.6 × Z²/N²

( Z=2 and N=2)

Energy of He+= 13.6 ×4/4 = 13.6 = -X from above equation