Which of the Following Statements Is INCORRECT

question 34

Multiple Choice

Which of the following statements is INCORRECT?

• A) Diagnostic imaging of the human digestive tract often requires a patient to consume a slurry of BaSO₄(s),a compound that contains the toxic Ba²⁺ ion.
• B) Hydroxyapatite is a calcium containing compound that is the main component of tooth enamel.
• C) Beryllium is toxic.Exposure (by breathing)to beryllium can cause berylliosis.
• D) Most magnesium is obtained from seawater,where it is present at a roughly 0.05 M concentration.
• E) Calcium is the central element in chlorophyll.