Question

Variations in the atomic size metallic character and chemical reactivity while moving from top to the bottom with reason 0th according to ch periodic classification of element

Answer 1

As we move from up to down a period the atomic size of the element increases as the number of shells are increased ..

Metallic character of of the element also increases while we move from up to down a group

Chemical reactivity of an element depends upon its outer shell electronic configuration . In a given group on moving down chemical reactivity of metal increases while that of non metal is decreases

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