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  • A metal M which is unreactive in air and moisture has two prominent oxidation states +1 and +3. in aqueous sol

A metal M which is unreactive in air and moisture has two prominent oxidation states +1 and +3. \mathrm{M^{+1}} in aqueous solution tends to disproportionate into \mathrm{M\; and\; M^{3+}} ions. This metal can be easily dissolved in a mixture of 3:1 mixture of concentrated hydrochloric and nitric acids. What is the M?

Option: 1

Pt


Option: 2

Ag


Option: 3

Cu


Option: 4

Au


Answers (1)

best_answer

Au has two oxidation states +1 and +3. \text{Au}^{+} in aqueous solution disintegrates into \text{Au and Au}^{3+}. Also, Au dissolves in aqua regia.

Posted by

Suraj Bhandari

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