What elements react with cobalt?

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Oxygen, sulfur and the elements of group 17.
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How does cobalt react with other elements?

It reacts with quite a few elements. In particular it reacts with the halogens and particularly fluorine to form fluoride salts. It also forms cobalt oxide with oxygen.

Does cobalt react with acid?

Yes, it does. The metal, Cobalt dissolves slowly in dilute sulphuric acid to form solutions containing the aqueous Co(II) ion together with hydrogen gas, H 2 . The equatio