<span>Formula of the 20 common amino acids. The formula of an amino acid comprises, bound to a carbon (alpha carbon): a carboxyl group -COOH. an amine group -NH2.</span>
<span>Cr3+ O2- ; the formula is Cr2O3 ( criss cross)</span>
<span>electrons and space filled with wispy positive charge I would love if I could get brainliest :)
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