Which of the following is the metallic ion in scandium (II) chloride? Scandium- Family 3 (Transition metal)
Chlorine- Family 17 (Halogen)

scandium

Explanation:

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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.