The name used for the ionic compound Co₂(SO₄)₃ is cobalt(III) sulfate. Hence, Option (2) is correct.
What is cobalt(III) sulfate ?
Cobalt sulfate is used in electroplating baths, storage batteries, sympathetic inks, and as an additive to soils and animal feeds etc.
Cobalt sulfate is a water-soluble cobalt salt with a variety of industrial and agricultural uses. Several cobalt compounds have induced sarcomas at injection sites in animals, and reports have suggested that exposure to cobalt-containing materials may cause lung cancer in humans.
Usually cobalt sulfate refers to the hexa- or heptahydrates CoSO₄6H₂O or CoSO₄7H₂O, respectively. The heptahydrate is a red solid that is soluble in water and methanol
Therefore, The name used for the ionic compound Co₂(SO₄)₃ is cobalt(III) sulfate. Hence, Option (2) is correct.
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