MCQ
$Y$ is


- A

- ✓

- C

- D







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$(i)$ $PtCl _{4} . 5 NH _{3}$ $(ii)$ $PtCl _{4} . 4 NH _{3}$ $(iii)$ $PtCl _{4} . 3 NH _{3}$ $(iv)$ $PtCl _{4}. 2 NH _{3}$
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[Given : $\mathrm{K}_{\mathrm{f}}=1.86 \,\mathrm{~K} \,\mathrm{~kg} \,\mathrm{~mol}^{-1} ;$ Density of water $=$ $1.00 \,\mathrm{~g}\, \mathrm{~cm}^{-3} ;$ Freezing point of water $\left.=273.15\, \mathrm{~K}\right]$