Which of the following electronic configurations represents a coinage metal?

On moving from left to right across a period in the periodic table,the metallic character:

Given below are two statements:
Statement $I$: Chlorine can easily combine with oxygen to form oxides,and the product has a tendency to explode.
Statement $II$: Chemical reactivity of an element can be determined by its reaction with oxygen and halogens.
In the light of the above statements,choose the correct answer from the options given below.

Which of the following oxides is different from the other three oxides?

Classify oxides and provide examples for each type.

How does the chemical reactivity change as we move from left to right across a period in the periodic table?