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Consider the following reaction and identify the correct statement(s) for the balanced equation?
$A u + A q u a r e g i a \to_{}^{} X_{(a q)} + Y ↑ + H_{2} O$ [Given that: ‘Y’ is a diatomic molecule]

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‘X’ is diamagnetic and ‘Y’ is paramagnetic

‘Y’ is paramagnetic with two unpaired electrons

1 mole $A u$ reduces 3 moles of $N O_{3}^{-}$

Aqua regia is a mixture of 1 part $C o n c . H N O_{3}$ and 3 parts Conc. $H C l$ by volume.

answer is A, D.

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Detailed Solution

i) $A u + 4 H^{+} + N O_{3}^{-} + 4 C l^{-} \to_{}^{} A u C l_{4}^{-} + N O + 2 H_{2} O$
ii) $X = {[A u C l_{4}]}^{-}, Y = N O$
iii) NO is paramagnetic with one unpaired electron

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