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Calcium is a ________ cation.(a) monovalent(b) trivalent(c) divalent(d) tetravalentThis question was addressed to me during an interview.Origin of the question is Tools of Recombinant DNA Technology: Competent Host topic in portion Biotechnology Principles and Processes of Biology – Class 12

Answer»

The CORRECT choice is (c) divalent

To explain I would say: CALCIUM is a divalent CATION. It has a valency of 2 and is WRITTEN as Cu^2+. Some other examples of divalent atoms are Zn^2+, Mg^2+, Co^2+, ETC.



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