MCQ PracticeThe atomic number of magnesium is 12. What will be its valency?Subject: ChemistryTopic: Chemical Bonding And ReactionsA+2B-3C+3D-2Correct Answer: APractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the