Multiple choice

The acantharea is a large amoebae found in marine water column. Which of the following strontium salts is a main constituent of their skeleton?

  1. Strontium peroxide

  2. Strontium ranelate

  3. Strontium sulphate

  4. Strontium sulphide

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Strontium sulphate (SrSO4) is the sulphate salt of strontium. It is a white crystalline powder and occurs in nature as the mineral celestine. Strontium sulphate is a polymeric material, isostructural with barium sulphate. Crystallized strontium sulphate is utilized by a small group of radiolarian protozoa, called the Acantharea, as a main constituent of their skeleton.