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प्रश्न
Compare the properties of metalloids with those of metals.
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उत्तर
Comparing the Properties of Metalloids with those of Metals:
- State-
- Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature.
- Metalloids are generally solids at room temperature
- Lustre-
- Metals have the quality of reflecting light from its surface and can be polished. Example Gold, Silver and Copper.
- They have metallic lustre and look like metals, but many show characteristic properties of weak non-metals.
- Conductivity-
- Metals are good conductors of heat and electricity.
- Metalloids are semi-conductors of electricity and show average transmission of heat.
- Malleability and ductile –
- Metals have the ability to withstand hammering and can be made into thin sheets known as foils.
- They are generally malleable and ductile. Silicon is not malleable or ductile, but and ductility is lustrous and acts as an electrical conductor under specific conditions.
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संबंधित प्रश्न
What are metalloids?
Give two uses of Tungsten
Give two uses of Germanium
Write ‘true’ or ‘false’ for the following statement.
Antimony is a metal.
Write ‘true’ or ‘false’ for the following statement.
Sand is an oxide of silicon.
The most ductile metal is _______.
Give the basic demarkation of the Modern Periodic Table into metals, metalloids and non-metals with special reference to halogens and noble gases.
Give a reason why the non-metals – halogens and noble gases are placed in separate groups of the periodic table with special reference to their difference in properties.
State what are metalloids.
Name the elements recognised as metalloids.
State the uses of three different metalloids.
State a specific reason for using steel in automobiles.
The element which possesses the character of both metals and non metals are called ______.
Give two examples for metalloids.
Write three properties of metalloids.
