Question

. The energy of hydrogen like atom in its ground state is -122.4ev. it may be A) Hydrogen atom B) He+ C) Li2+ D) Be3+

Answer 1

we know that,

E= - 13.6z²/n²

A) Hydrogen atom

E= -13.6(1)²/(1)²= -13.6 eV. ×

B)He+

E= -13.6(2)²/(1)²= -54.4 eV ×

C)Li 2+

E=-13.6(3)²/(1)²= -122.4 eV. ✓

I hope this helps ( ╹▽╹ )