Answer:
I believe is electromagnetic energy
Explanation:
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Molecular compound consists of molecules whose formula represents the actual number of atoms bonded together in the molecule. While ionic compound are ions that gain or lose electrons resulting in a positive or negative charge.
In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
Including the alkanes, oils , fats and greasy substances in general
The atomic mass on the periodic table represents the sum of number of protons and number of neutrons.
Atomic mass = Number of protons + number of neutrons
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