Question

the order of ionisation potential between He+ ion and H atom is

Answer 1

I think it's c).....

the ionisation potential means the energy required to withdraw the valence electron....

as the positive charge increase the size decrease leads to more ionisation potential...

so that...

c) option is correct

Answer 2

Hello dear,

● Answer -
I.P.(He+) > I.P.(H)


# Ionisation energy -
- It is the minimum amount of energy required to remove the valence electron of an isolated neutral gaseous atom or molecule.

For H atom,
I.P.(H) = Rh.Z^2
I.P.(H) = 13.6 × 1^2
I.P.(H) = 13.6 eV

For He+ atom,
I.P.(He+) = Rh.Z^2
I.P.(He+) = 13.6 × 2^2
I.P.(He+) = 54.4 eV

Therefore,
I.P.(He+) > I.P.(H)


Hope this helps