In the compound Na3PO4, which two atoms are involved in the formation of a covalent bond?

Answer:
P-O.
Explanation:
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In this case, according to the definition of the covalent bond, which involves valence electrons sharing, occurring specially between nonmetals, we infer that the P-O bond is the most likely to be covalent, because the P-Na bond is not present and the O-Na bond is ionic.
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