Which of the Following Statements Concerning Magnesium Is False

Multiple Choice

Which of the following statements concerning magnesium is false?

A) Magnesium ion is the third most abundant dissolved ion in the oceans.
B) Magnesium reacts with oxygen to produce magnesium oxide.
C) Magnesium has a low density compared to most metals.
D) Magnesium is the least reactive alkaline earth metal.
E) Magnesium is used as a reducing agent in the production of zirconium.