explain the change from metallic to non metallic character among the element of third period ?
Answers
Metallic character is the name given to the set of chemical properties associated with elements that are metals. These chemicals properties result from how readily metals lose their electrons to form cations (positively charged ions).
Physical properties associated with metallic character include metallic luster, shiny appearance, high density, high thermal conductivity, and high electrical conductivity. Most metals are malleable and ductile and can be deformed without breaking. Although many metals are hard and dense, there is actually a wide range of values for these properties, even for elements that are considered highly metallic.
Metallic Character and Periodic Table Trends
There are trends in metallic character as you move across and down the periodic table. Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. Metallic character increases as you move down an element group in the periodic table. This is because electrons become easier to lose as the atomic radius increases, where there is less attraction between the nucleus and the valence electrons because of the increased distance between them.