MCQ
All the elements of oxygen family are
- ANon-metals
- BMetalloids
- CRadioactive
- ✓Polymorphic
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$H_3PO_4$ $\xrightarrow{{600\,{\,^o}C}}(Y)$
$(X)$ and $(Y)$ is
$PC{l_5}\, \rightleftharpoons \,PC{l_3}\, + \,C{l_2}\,;\,{K_C} = \,0.0414\,mol\,{L^{ - 1}}$