Question

Arrange:
Si, Na, Al, Mg, Cl, P, S (in decreasing non-metallic character).

Answer 1

Arranging the above elements in decreasing order of non metallic character
Cl >S >P >Si >Al >Mg >Na

This order can be determined by using the concept of electronegativity.

Along the period electronegativity increases and non meatallic character is directly proportional to electronegativity.

hence along the period non metallic character increases.
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Answer 2

Answer:

Arranging the above elements in decreasing order of non metallic character

Cl >S >P >Si >Al >Mg >Na

This order can be determined by using the concept of electronegativity.

Along the period electronegativity increases and non meatallic character is directly proportional to electronegativity.

hence along the period non metallic character increases.

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