1.

Write the short note on anamolous properties of the first element of p - block.

Answer»

Solution :Anamolous properties of the first element of p - block : In p - block ELEMENTS, the first MEMBER of each GROUP differs from the other elements of the corresponding group. The following factors are responsible for the anomalous behaviour.
(i) Small size of the member.
(ii) High ionisation enthalpy and high ELECTRONEGATIVITY.
(iii) Absence of d - orbitals in their VALANCE shell


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