Question

ionising energy for hydrogen atom in the ground state is E. What is the ionisation energy of Li±±± atom in
the second excited state ?
a) 9 E
b) 6 E
C) 3E
d) E​

Answer 1

IE of H= E

IE of any single electron species=( IE of H/n^2) Z^2

IE of Li^3+= (E/(3)^2) 3^2 = E

answer= E(d)