How many protons does 40//20Ca contain? by Sunday | May 9 | Chemistry WAEC | 0 comments A. 20 B. 30 C. 40 D. 60 Correct Answer: Option A A. 20 Users Also Read These:A metallic ion Z2+ with an inert gas structure…Which of the following parts of the ear does NOT…A meal consisting of yam and a lot of vegetables is…How many electrons does 3115P3− contain?Which of the following species does not contain a…