Chapter 4: Elements, Atoms & Isotopes
Whereas nitrogen can form a maximum of four covalent bonds, other elements in the group can form more than four covalent bonds by utilizing one or more of the nd orbitals. Nitrogen and phosphorus form simple anion with “-3” charge when reacted with very reactive metals, such as those of Group 1A and 2A metals: Li3N, Mg3N2, Na3P, and Ca3P2 ... ................
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