Question

Why S block has fixed valency where as p and d block elements show variable valencies​

Answer 1

The electrovalency of an element is equal to the number of electrons lost or gained by its atom during the formation of ionic bonds. The s-block elements do not show variable valency. However, p-block elements with higher atomic number transition and inner transition elements show variable valency.

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Answer 2

Answer:

The electrovalency of an element is equal to the number of electrons lost or gained by its atom during the formation of ionic bonds. The s-block elements do not show variable valency. However, p-block elements with higher atomic number transition and inner transition elements show variable valency.

Explanation:

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