MCQ
n-butane and isobutane are :
- ✓chain isomers
- Bposition isomers
- Cmetamers
- Dtautomers
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$\mathrm{Sn}^{4+}, \mathrm{Sn}^{2+}, \mathrm{Pb}^{2+}, \mathrm{Tl}^{3+}, \mathrm{Pb}^{4+}, \mathrm{Tl}^{+}$