The s-block Elements — Chemistry STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe s-block Elements1 Mark
Question
How does the basicity of oxides of group 2 increases down the group?
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Answer
The basicity increases down the group
$\text{BeO}<\text{MgO}<\text{CaO}<\text{SrO}<\text{BaO}\\ \text{Amphoteric}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Strongly basic}$
Among the oxides of alkaline earth metals, BeO is amphoteric while other oxides are basic in nature. The decrease in basic character of oxides from Be to Ba is because of decrease in polarising power with increase in ionic size.
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