Question

which of the following oxide is most basic Li2O,Na2O,K2O,Cs2O​

Answer 1

Cs2O is the most basic oxide.

• As one moves down a group in the periodic table, basicity increases. Cs2O is situated towards the end of the group and hence is most basic.

• The basicity of oxides is determined by the electropositivity of the central atom of the oxides.

• The greater the eletropositivity of an atom, lesser is the basicity. As electropositivity decreases down the group, basicity of oxides increases.

Answer 2

Answer:

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