Question
An element $X$ which occurs in the first short period has an outer electronic structure ${s^2}{p^1}$. What are the formula and acid-base character of its oxides
✓
Answer
c
(c) ${B_2}{O_3}$,$A{l_2}{O_3}$are amphoteric oxides.
(c) ${B_2}{O_3}$,$A{l_2}{O_3}$are amphoteric oxides.
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