Question

6. What is true about Calcium (Ca)?

A. It is a very unreactive metal.

B. It is reactive and is found with nonmetals in nature.

C. naturally uncombined with other elements.

D.It is a very reactive nonmetal.

Answer 1

Answer:

C. naturally uncombined with other elements.

Explanation: Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air.