Compare an electrically neutral atom of hydrogen and an isotope of hydrogen.

In comparison, a neutral hydrogen and an isotope of hydrogen have same chemical properties because o having the same number of protons and electrons, However, they have different number of neutrons which gives them their mass number. The difference in mass number gives the two isotope their mass related properties. For instance, a hydrogen isotope with an extra neutron will be much heavier than the neutral hydrogen.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.