• # question_answer 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 [DCE 1999] A) $X{{O}_{3}},$ basic B) ${{X}_{2}}{{O}_{3}},$ basic C) ${{X}_{2}}{{O}_{3}},$ amphoteric D) $X{{O}_{2}},$ acidic

${{B}_{2}}{{O}_{3}}$,$A{{l}_{2}}{{O}_{3}}$are amphoteric oxides.