hydrogen will have more dwvition from ideal gas although both have 2 electon.because in case of hydrogen the two electron will be distributed over the two hydrogen atom leading to sme vqnderwaal dorce of attraction thus deviating morefrom ideal behaviour whereas in case of helium it has one atol amd the 2 Aelectron are disperesed over that atom only
thanks and regards
sunil kumar
askIItian faculty