A metallic ion Z2+ with an inert gas structure contains 18 electrons. How many protons are contained in this ion? by Sunday | Dec 10 | Chemistry WAEC | 0 comments A. 20 B. 18 C. 16 D. 2 Correct Answer: Option A A. 20 Users Also Read These:Protons and electrons are called fundamental…If 1 mole of sodium contains 6 x 10²³ atoms, how…In metallic solids, the forces of attraction are…How many protons, neutrons and electrons…How many valence electrons are contained in the…