What is an ion? What are the different properties of an ion? There is more than one answer choose all that apply

An ion is an atom or molecule that has a different number of electrons than protons, so it has a charge.

Explanation:

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answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

a electronegativity decreases beacuse the size of nucleus is bigger.