Chapter 2

Another violation of the octet rule that is important

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Unformatted text preview: ital has at least one electron in it.") Bio 20A will not examine the profound implications of the fact that molecular oxygen has unpaired electrons. Another violation of the octet rule that is important in Bio 20A is seen in the structure of phosphate. In biomolecules, phosphorous invariably occurs as phosphate, a derivative of phosphoric acid. Phosphate is an exception to the octet rule generalization because the P atom forms 3 single and one double covalent bond (to 4 oxygen atoms) not the 3 single bonds predicted by the octet rule. Hydrogen Bonds The relationship between polar covalent bonds and hydrogen bonds must be clearly understood! It might well be said that pola...
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