Which nitrate on decomposition will give metal?

CHEMISTRY · Single correct · ICSE · Chemistry · Metallurgy · Metallurgy

Problem

Which nitrate on decomposition will give metal? (1) Hg2(NO3)2\text{Hg}_2(\text{NO}_3)_2 (2) NaNO3\text{NaNO}_3 (3) KNO3\text{KNO}_3 (4) AgNO3\text{AgNO}_3

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