Explanation:
Graphite's carbon atoms are arranged in layers held together by weak van der Waals forces. Layers can slide over each other, reducing friction. It is stable at high temperatures, so used where oil would decompose.
Explanation:
Carbon monoxide (CO) has a triple bond. In the formation, oxygen, with two lone pairs, donates one lone pair to form a coordinate bond with carbon after normal double bond formation, resulting in a structure :C≡O:. Thus oxygen donates the pair. This satisfies the octet for both.
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