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Question
State the main aim of classifying elements. Which is the more fundamental property of elements that is used in the development of Modern Periodic Table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals, non-metals and metalloids?
Solution
Systemetic study of all elements is the main aim of classifying elements. The atomic number of an element is the more fundamental property of element that is used in the development of Modern Periodic Table. The Modern Periodic Law was given based on this fundamental property. This law can be stated as follows:
‘Properties of elements are a periodic function of their atomic number.’
Positions of metals, non-metals and semi-metals in the Periodic Table are given following.
- The metals are found towards the left-hand side of the Periodic Table.
- The non-metals are found on the right-hand side of the Periodic Table.
- The semi-metals or metalloids are found in the middle of the periodic table along a zig-zag line that separates metals from non-metals.
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