MCQ
If the difference in electronegativities of two elements is very large, then
- AThe bond is $50\%$ ionic
- BThe bond is $100\%$ covalent
- CThe bond is more covalent than ionic
- ✓The bond is more ionic than covalent
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$Na _{2} O , As _{2} O _{3}, N _{2} O , NO$ and $Cl _{2} O _{7}$
Number of amphoteric oxides is ..... .