Question

an unidentified pure solid is composed of an element. the substance is metallic and reacts easily with oxygen in the air, forming a dull surface coating. where is this element most likely found on the periodic table? a at the top of the periodic table b at the bottom of the periodic table c on the left side of the periodic table d on the right side of the periodic table

Explanation:

Metals on the left - hand side of the periodic table are highly reactive. They can easily react with oxygen in the air to form oxides, which can create a dull surface coating. Elements at the top are often non - metals or less reactive metals, elements at the bottom may be radioactive or less common, and elements on the right are mostly non - metals.

Answer:

C. on the left side of the periodic table