5. What is the difference between multivalent and trivalent?

Multi valance refers to species that are not restricted to a specific number of valence bonds

Species with a single charge are univalent .

Explanation:

If Cs+ cation is a Univalent of monovalent Cation, whereas the Ca2+ cation is a divalent cation, and the Fe3+ cation is a trivalent cation.

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.