Mercury on heating with aqua-regia gives : (a) \( \mathrm{Hg}\left(\mathrm{NO}_{3}\right)_{2} \)...

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Mercury on heating with aqua-regia gives :
(a) \( \mathrm{Hg}\left(\mathrm{NO}_{3}\right)_{2} \)
(b) \( \mathrm{HgCl}_{2} \)
(c) \( \mathrm{Hg}\left(\mathrm{NO}_{2}\right)_{2} \)
(d) \( \mathrm{Hg}_{2} \mathrm{Cl}_{2} \)
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