Which elements have the most similar chemical properties

elements in the same group have the most similar chemical properties.

Explanation:

Elements are substances that make up matter. Matter are made of atom. Elements are listed and organized on the periodic table. The periodic table also gives important information about each elements. There are about one hundred and twenty elements that exist in the universe.

Elements in the same group tends to have similar chemical properties. This concept works extremely well for group 1 (alkali metals), group 2 (alkaline earths), and group 8 or 0 (noble gases).

answer carbon and three oxygen atoms;