Metalloids
Metal and Non-metals of Class 8
An element that has a property of metal and non-metal both are known as Amphoteric elements or Metalloids.
|
Element |
Metallic Property |
Non-Metallic Property |
|
Germanium |
It acts as a semiconductor with rise in temperature. |
GeO2 is acidic in nature. |
|
Arsenic |
Metallic grey arsenic is a fair conductor of electricity. |
Yellow arsenic forms hydride. (AsH3), a weak base. |
|
Antimony |
Grey coloured antimony conducts electricity |
Yellow antimony forms stibine. (SbH3), a weak base. |
|
Selenium |
Good conductor of electricity at 475K. |
It exists in one non-metallic allotropic form. |
|
Tellurium |
Low electrical conductivity. |
Tellurium resembles sulphur in chemical properties. |
- Introduction
- Metals and non metals
- Classification of elements
- Electropositive or electronegative nature of elements
- Occurrence of metals and non-metals
- Occurance of metals
- Occurance of non-metals
- Physical properties of metals
- Non-metals and their general properties
- Chemical properties of metals
- Reactivity Series of Metals
- Chemical properties of non-metals
- Electron redistribution in chemical bonds
- Uses of some common metals
- Uses of some common non metals
- Corrosion of metals
- Metalloids
- Alloys
- Metallurgy
- Uses of metals and non metals
- Solved questions
- Exercise 1
- Exercise 2
- Exercise 3
- Exercise 4
