The Lewis dot notation for two atoms is shown. Mg is written with two dots on its right. O is written on the right of Mg. There are six dots around O. Two arrows point from the dots near Mg to O.

What is represented by this notation?

Mg gains two protons from O.

Mg donates two protons to O.

Mg gains two electrons from O.

Mg donates two electrons to O.

where is the following

explanation:

1. they vary with a higher number because boiling is way hotter than melting

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.