A) \[HgO\]
B) \[P{{b}_{3}}{{O}_{4}}\]
C) \[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\]
D) \[Hg{{I}_{2}}\]
Correct Answer: D
Solution :
[d] \[Hg{{I}_{2}}+2KI\to {{K}_{2}}Hg{{I}_{4}}\] Also \[Hg{{I}_{2}}\xrightarrow{\Delta }Hg+{{I}_{2}}\uparrow (violet)\] Hg being volatile metal deposits at cooler part of test tube.
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