Question

Explain giving justification the trends in the following properties of elements, on moving from left to right in a period, in the Modern periodic Table? (a) Variation of valency. (b) Change of atomic radius. (c) Metallic to non-metallic character. (d) Electronegative character (e) Nature of oxides.

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Answer 1

Metallic to Non - Metallic character --- Nuclear charge acting on the valence shell electrons increases across a period, the tendency to lose electrons will decrease . Hence the metallic character decreases across a period and the Non-Metallic character increases across a period .

Answer 2

Answer:

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