You will mostly find me in solid form at room temperature.
a
Metal
b
Nonmetal

Nonmental.

Nonmetals are located on the far right side of the periodic table, except hydrogen, which is located in the top left corner.

Explanation:

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a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.