MCQ
Which of the following is the most basic oxide ?
  • A
    $SeO_2$
  • B
    $Al_2O_3$
  • C
    $Sb_2O_3$
  • $Bi_2O_3$

Answer

Correct option: D.
$Bi_2O_3$
d
Left to right in the periodic table, the acidic nature increases and from top to bottom the basic character increases for the oxides.

So the basic nature is

$B i_{2} O_{3}>S b_{2} O_{3}>A l_{2} O_{3}>S e O_{2}$

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