MCQ
Two possible stereoisomers for


- ✓enantiomers
- Bdiastereomers
- Cconformers
- Drotamers

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$ \mathrm{Sr}^{2+}(\mathrm{Z}=38), \mathrm{Cs}^{+}(\mathrm{Z}=55), \mathrm{La}^{2+}(\mathrm{Z}=57) \mathrm{Pb}^{2+} $
$ (\mathrm{Z}=82), \mathrm{Yb}^{2+}(\mathrm{Z}=70) \text { and } \mathrm{Fe}^{2+}(\mathrm{Z}=26)$
$2{C_4}{H_{10(g)}}\, + \,13{O_{2(g)}}\, \to \,8C{O_{2(g)}}\, + \,10{H_2}{O_{(l)}}\,;$ $\Delta {H^o}\, = \, - \,5756\,KJ$

