Topic Content:
- Families of Elements – Introduction
Elements in the same group belong to one family and are similar in their chemical behaviour because they have the same number of valence electrons. Elements in the same period have the same number of electron shells.
Certain properties of elements in the same group show a gradual change with increasing atomic numbers. Properties include physical properties like melting pointThe temperature at which a solid changes its state to liquid at atmospheric pressure is called the melting point of that liquid. The melting point is usually defined as the point... More, densityDensity is the measurement of how tightly a material is packed together i.e. how closely the particles are packed in the material. The tighter the material is packed the more its... More, etc.
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