Which of the following is not a characteristic of metals?

-high luster
-conducts electric current
-forms crystalline solids
-brittle

The right option is; Brittle

Metals are substances or chemical elements that form a metallic bond with other metal atoms. Metals are usually lustrous, ductile, opaque, malleable, and good conductors of heat and electricity. Metals form crystalline solids at room temperature and they are not brittle. Examples of metals include copper, silver, iron, mercury and sodium.

Brittle is not a characteristic of the metals.

Further Explanation:

Metals are chemical substances that are inorganic in nature. The most abundant possess are sodium, magnesium, iron, aluminum, and calcium. The copper, platinum, silver, gold not readily react with other elements so they are present in free-state. The characteristics of metal are:

Metals are mainly crystalline in nature. The crystal structure of metals is very simple with a relatively high degree of symmetry. The metal reacts readily with other non-metal. The reactivity of metals are different from each other, lithium and potassium are highly reactive metal compound. The platinum, palladium, gold, and silver are very low reactive compounds. The metals are usually malleable and ductile in nature that means they can be transformed into wire and sheet. The brittle substances do not possess these characteristics and therefore, brittleness is not a characteristic of metals.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Metals and Non-metals

Keywords:

Substance, compound, metal, crystalline, gold, potassium, lithium, silver, malleable, brittle, ductile, hard, reactivity, electricity, conductivity.

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