What describes the lack of chemical reactivity between a material and others?

• A. Chemically inert
• B. Reactive
• C. Corrosion
• D. Magnetic

Answer: (A)

Chemically inert means a material does not readily form new chemical bonds with other substances. This stability comes from a full outer electron shell or a protective surface layer that resists attack, so the material won’t engage in reactions under normal conditions. Because of this, it resists processes like corrosion and chemical attack that would occur with reactive materials. When something is reactive, it readily undergoes chemical changes in contact with other substances. Corrosion is a specific outcome of such chemical reactions between a material and its environment, leading to deterioration, so it’s describing what happens when reactivity is present, not the lack of it. Magnetic properties concern how a material responds to magnetic fields, not its chemical reactivity, so that choice doesn’t capture the idea of lack of chemical reactivity.