Examine the elements of the third period and classify them as metals or non-metals. Comment on the metallic and non-metallic character of the third period. Name the most metallic element and non-metallic element of this period.

Examine the elements of the third period and classify them as metals o

1.	Examine the elements of the third period and classify them as metals or non-metals. Comment on the metallic and non-metallic character of the third period. Name the most metallic element and non-metallic element of this period.
Answer» Solution :Na (Sodium), Mg (Magnesium) and Al (Aluminium) are metals. SI (Silicon) is a metalloid. P (Phosphorus), S (SULPHUR) and Cl (Chlorine) are non-metals. 142 As we go from LEFT to right across the third PERIOD, metallic character decreases and non-metallic character increases. The most metallic element in the third period is Na and the most non-metallic element is Cl.