How are ions formed? by the disintegration of one or more electrons by the sharing of one or more electrons between two atoms by the transfer of one or more electrons from one atom to another by the disintegration of one or more protons

a c d and f

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the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.