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:A hydrogen chloride gas reacted with oxygen gas to…If 1 mole of sodium contains 6 x 10²³ atoms, how…A particle that contains 9 protons, 10 neutrons and…How many protons, neutrons and electrons…In metallic soild, the forces of attraction is…