Multiple choice

Paramagnetic materials have a small and positive susceptibility to magnetic fields. Which among the following is a paramagnetic salt?

  1. Cobalt (II) bromide

  2. Cobalt (II) chloride

  3. Cobalt (II) carbonate

  4. Cobalt (II) sulfate

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

Cobalt (II) carbonate is the inorganic compound with the formula CoCO3. This reddish paramagnetic solid is an intermediate in the hydrometallurgical purification of cobalt from its ores, as an inorganic pigment and as a precursor to catalysts.