(a) How does the metallic character of an element correlate with the acidity of its oxide?

(b) What trends, if any, exist in oxide basicity across a period and down a group

Short Answer

Expert verified

a) Thus, the metallic character of an element and the acidic character of its oxide are inversely related.

b) Therefore, the basicity of an oxide of an element decreases from left to right in a period and increases on moving down in a group.

Step by step solution

01

Metallic character

Generally, acidity increases with increasing atomic number of elements, and basicity is like electronegativity decreases in a group.

02

Explanation

a) When the electronegativity value of an element is greater than the electronegativity value of oxygen, the oxide of the element is more acidic due to this. Therefore, the metallic character of an element and the acidic character of its oxide are inversely related.

b) When the electronegativity value of an element is greater than the electronegativity value of oxygen, the oxide of the element is more acidic. Due to this the basicity of the oxide of an element decreases from left to right in a period, whereas the acidity increases. The elements above oxygen in the periodic table form acidic oxides, whereas those below oxygen in a group form basic oxides. Therefore, the basicity of oxides increases on moving down in a group.

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