What are valence shell electrons? A. Electrons that are uncharged B. Electrons that are positively charged C. Electrons that are available for bonding D. Electrons that are attached to the nucleus

C. Electrons that are available for bonding

Explanation:

Valence Shell Electrons can be define as  electrons found in the outermost shell of an atom.

These are the electrons that participate in chemical reaction.

Using the  K L M  electronic configuration  for illustration;

Na (sodium) has 11 as its atomic number; the electronic configuration is  2, 8,  1

The last shell in a sodium atom only has 1 electron, hence we say the valence electron is 1.

This is the electron that is used in bond formation when Sodium atom reacts with other atoms of different element e.g chlorine.

C. Electrons that are available for bonding.

Explanation:

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.