- A$XeF_2$
- ✓$XeOF_4$
- C$XeO_3$
- D$XeOF_2$
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$(1)$ Reaction of gold with aqua regia produces $NO _2$ in the absence of air
$(2)$ Aqua regia is prepared by mixing conc. $HCl$ and conc. $HNO _3$ in $3: 1$ ($v/v$) ratio
$(3)$ Reaction of gold with aqua regia produces an anion having $Au$ in +$3$ oxidation state
$(4)$ The yellow colour of aqua regia is due to the presence of $NOCl$ and $Cl _2$
Reason $(R)$ : Extra stability to half filled electronic configuration is observed than incompletely filled electronic configuration.
In the light of the above statement, choose the most appropriate answer from the options given below:
$C{u_{\left( s \right)}} + 2Ag_{\left( {aq} \right)}^ + \to Cu_{\left( {aq} \right)}^{2 + } + 2A{g_{\left( s \right)}}$