Write 5 properties of non metals
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non metal was not lustre,hard,sorority,ductility,conductivity
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Answer:
Nonmetals are a group of elements that have certain distinct properties. Here are five properties of nonmetals:
1. Poor Conductors of Heat and Electricity
2. Brittle and Non-Malleable:
3. Lower Density
4. Various Physical States
5. Generally, High Electronegativity:
Explanation:
1. Poor Conductors of Heat and Electricity: Nonmetals are generally poor conductors of heat and electricity. This is because they have fewer free electrons compared to metals, which are responsible for the efficient transfer of heat and electricity. For example, elements like sulfur and phosphorus are nonmetals and do not conduct heat or electricity well.
2. Brittle and Non-Malleable: Nonmetals are typically brittle and non-malleable, meaning they are prone to breaking or shattering when subjected to stress. Unlike metals, which can be hammered into thin sheets (malleability) or stretched into wires (ductility), nonmetals lack these properties. For instance, carbon in the form of graphite is a nonmetal and can easily break into small fragments.
3. Lower Density: Nonmetals generally have lower densities compared to metals. Density refers to the mass of an element divided by its volume. Nonmetals tend to have fewer atoms packed closely together, resulting in lower densities. For example, oxygen and nitrogen, which are nonmetals, have lower densities than metals like gold or lead.
4. Various Physical States: Nonmetals exist in different physical states at room temperature. Some nonmetals are gases, such as oxygen, nitrogen, and chlorine. Others can be solids, like carbon in the form of graphite or sulfur. Bromine is a nonmetal that exists as a liquid at room temperature. This diversity in physical states distinguishes nonmetals from metals.
5. Generally, High Electronegativity: Nonmetals typically have high electronegativity. Electronegativity refers to an element's ability to attract electrons in a chemical bond. Nonmetals tend to have a greater affinity for electrons compared to metals. This property is particularly important in chemical reactions involving nonmetals, as they often gain or share electrons to form compounds.
In summary, nonmetals possess properties such as poor conductivity, brittleness, lower density, diverse physical states, and high electronegativity. These properties differentiate nonmetals from metals and play a significant role in their behavior and chemical reactions.