Which of these gaseous elements is least reactive hydrogen helium nitrogen or oxygen

Nobel gases

i dont know what the options were but i hope that helped

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

b) nuclear ive learned that in a pedtrodic table