Changed a great deal. Circle the letter of each sentence that correctly describes atoms.
a. Most of the mass of an atom is due to electrons.
b. Atoms have no overall electrical charge.
Atoms of different elements have the same number of protons.
d. Most of the volume of an atom consists of protons and neutrons.
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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.