Which of the following is arranged in decreasing order of size? - Vidyadip

MCQ

Which of the following is arranged in decreasing order of size?

A
$Mg^{2+} > Al^{3+} > O^{2-}$
✓
$O^{2-} > Mg^{2+} > Al^{3+}$
C
$Al^{3+} > Mg^{2+} > O^{2-}$
D
$Al^{3+} > O^{2-} > Mg^{2+}$

✓

Answer

Correct option: B.

$O^{2-} > Mg^{2+} > Al^{3+}$

b
$Size\,\alpha \,\frac{1}{{{z_{eff.}}}}$

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