Among the following metal oxides, which is most basic?

Question

Among the following metal oxides, which is most basic? (A) ZnO (B) Al2O3 (C) As2O3 (D) K2O

Tardigrade Admin · Accepted Answer

The basic character of metal oxides decreases from left to right in a period due to decrease in electropositive character which in turn decreases the polarity of bond as well as the internuclear distance between the oxygen and metal atom. Therefore, alkali metal oxides are most basic and halogen oxide (oxygen halides) are most acidic ∴ K2O is most basic metal oxide.

Q. Among the following metal oxides, which is most basic?

$Z n O$

$A l_{2} O_{3}$

$A s_{2} O_{3}$

$K_{2} O$

Q. Among the following metal oxides, which is most basic?

ZnO

Al2​O3​

As2​O3​

K2​O

$Z n O$

$A l_{2} O_{3}$

$A s_{2} O_{3}$

$K_{2} O$