Now try the following three examples: elements formula name barium phosphorus The element barium is an Alkaline Earth Metal, which loses two electrons (2 ) and phosphorus is in Group V, which gains three electrons (3-). It will have the ending "ide". silver carbon The element silver is a transition metal, with only one stable ionic state. Carbon is in Group IV, which gains four electrons. A. cadmium B. hydrogen

No element gains 4 electron in the case of transition element they bonds with covelent  bonding whereby the electrons are shared around the last orbits

Explanation:

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moisture is lackin, and organic acids are scarce.