Question

•Differenciate between metals and non metals?
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Answer 1

Answer:

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Explanation:

Metals and Nonmetals are different types of materials present around us. Elements can be divided into metals and nonmetals and it is important to know whether a particular element is a metal or nonmetal. Metals (like copper and aluminium) are good conductors of heat and electricity, while nonmetals (such as phosphorus and sulfur) are insulators. Materials are distinguished as above, based on their properties.

What are Metals?

Majority elements in the periodic table are metals. This includes alkali metals, transition metals, lanthanides, actinides and alkaline earth metals. Metals are separated by nonmetals on a periodic table through a zigzag line starting from carbon, till radon. The elements between the two are phosphorus, selenium and iodine.

These elements and elements right to them in the periodic table are nonmetals. Elements present just to the left of the line are termed as semimetals or metalloids. These will have the combined properties of both metals and nonmetals.

 

Non-metals occupy the upper right-hand portion of the periodic table. Considering the properties of non-metals it is not shiny, malleable or ductile nor are they good conductors of electricity. These properties of non-metals provide one means by which we can distinguish metals from non-metals.

Properties of Non-metals have less in common with each other than metals. Their physical and chemical properties vary widely. Some non-metals are solids and some are gases at room temperature.

 

Answer 2

Explanation:

$\sf \fbox \pink{Metals}$

• Metals are malleable and ductile.

• Metals are lustrous and can be polished.

• Metals are good conductors of heat and electricity.

• Metals are solids at room temperature.Except for mercury which is a liquid metal.

• metals are strong and tough.

$\sf \fbox \purple{Nonmetals}$

• Non- metals are brittle (break easily). They are neither malleable nor ductile.

• Non-metals are non-lustrous (dull) and cannot be polished. Except for iodine

• Non-metals are bad conductors of heat and electricity. Except for graphite which is a good conduction of electricity.

• Non-metals may be solid, liquid or gases at the room temperature.

• Non- metals react with hydrogen to form stable, covalent hydrides

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