Respuesta :

znk

Answer:

Helium

Explanation:

Helium is most likely to undergo a chemical reaction because

  • It has a complete electron shell, so it does not need any more electrons
  • Its electrons are closest to the nucleus, so it is extremely difficult to remove them
NeilIceland
The elements least likely to undergo a chemical reaction are:
Gold: Au
Silver: Ag
Platinum: Pt

They are located very low in The Reactivity Series and hence don't react with any other substance. That is why their market value is pretty high.