Explain the basis of classification of elements in periodic table.

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Solution

Elements are classified depending on the difference in their chemical properties. Chemical properties of an element depend on the electronic configuration. If the element has 1, 2 or 3 electrons, it behaves like a metal since it has a tendency to lose electrons. If on the other hand it has 4, 5, 6 or 7 electrons, it is considered a non metal as it accepts electrons to attain stability.
On basis of electronic configuration, elements are classified as:
1. s-block metals
2. p-block non-metals
3. d-block transition metals
4. f-block inner transition metals

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Similar questions

(a) Name an element whose properties were predicted on the basis of its position in Mendeleev's periodic table.

(b) Name two elements whose atomic weights were corrected on the basis of their positions in Mendeleev's periodic table.

(a) What was Mendeleev's basis for classification of elements ?

(b) Mendeleev's contributions to the concept of periodic table laid the foundation for the Modern Periodic Table.Give reasons.

s, p, d

f -

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