MCQ
A sodium cation has a different number of electrons from
- A${O^{2 - }}$
- B${F^ - }$
- ✓$L{i^ - }$
- D$A{l^{3 + }}$
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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 ..... .