Select all that apply.when the products of a reaction are hotter than the reactants

When the products of a reaction are hotter than the reactants, an exothermic reaction is happening. An exothermic reaction is a reaction that releases energy to the surroundings. The energy released should be more than what is absorbed in order to maintain the reaction.

Explanation:

The atoms of elements on the same period on the periodic table typically have the same number of valence electrons.

They have the same electronic configuration.

Valence electrons are electrons in the outermost shell of an atom.

The number of electrons in an atom is a good indicator of elements that might potentially belong to the same group.