Question

How does the metallic and non- metallic character vary on moving from left to right in a period?

Answer 1

Metal are elements which lose electrons to gain positive charge..The metallic character decreases as we go from left to right in a period as the tendency to lose electrons decreases as the valence electrons increase..
Non metals are elements which gain electrons to acquire a negative charge..As we go from left to right in a period the non metaic character increases as the tendency to gain electrons increases due to the increase in the valence electrons..
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Answer 2

Answer:

The metallic character decreases as we move left to right and non-metallic character increases as we move from left to right.

Explanation:

Because,as we move left the tendency to lose electrons decreases and thus metallic character decreases from left to right and non-metallic character increases from left to right along a period