B. released, forming bonds usually releases energy.
A substance either an ion or a molecule that can act either an acid or a base depending on a medium is called Amphoteric. Some metals like zinc, tin, copper and aluminium which produce either metal oxides or hydroxides are examples of amphoteric. During the Amphoterism, the metal compound acts either an acid or a base depending on their oxidation state.
Answer:
Exothermic
Explanation:
I think it is exothermic because heat is being released
'cause alphe-particle which was +ve charge, get repulsion from the atom, so he deducted that.......