| Classification of Elements |
ELEMENTS
An element is a pure substance that cannot be decomposed into any pure
substance and which forms basic building blocks of any matter.
Classification of Elements
|
Class |
Position in periodic table |
Properties |
Examples |
| Noble gases |
Group 'O' |
- Gases
- Colorless
- Chemically Unreactive
- Diamagnetic (weakly repelled by magnetic field)
|
Neon Argon
Krypton |
| Represe-ntative elements |
Group 'A' |
- Metallic or nonmetallic
- Wide range of chemical behavior
- Range of physical characteristics
- Diamagnetic or paramagnetic (drawn in magnetic field)
|
Nitrogen Bromine
Boron |
| Transition elements |
Group 'B' |
- Metallic
- Paramagnetic
- Forms highly colored compounds
|
Titanium
Iron
Zinc |
| Inner Transition elements |
Bottom of periodic table |
- Properties similar to elements of group III B
- Covered over two periods 6th and 7th
- 6th period elements are called Lanthanide series
- 7th period elements are called Actinide Series
- Metallic
- In general paramagnetic
|
Thorium
Terbium
Curium |
|
