Explain the trends of the metallic character in a period and a group.

1.	Explain the trends of the metallic character in a period and a group.
Answer» Solution :ELECTROPOSITIVE elements possesses metallic character. Metals have a strong tendency of losing the electrons during bond FORMATION process. Trend of the metallic character in a group : On moving down in a group, the effective nuclear CHARGE experienced by valence electrons decreases because the outermost electrons are far away from the nucleus. Therefore tendency of the element to lose electrons increases and electrons can be LOST easily. Hence, the metallic character increases on moving down in a group. Table 14: VARIATION in metallic character of the elements of group1 Metallic elements possess 1, 2 or 3 electrons in their outermost shells. Trend of the metallic character in a period : On moving from left to right in a period, the effective nuclear charge experienced by valence electrons increases. Therefore, the tendency to lose electrons will decrease. Thus, metallic character decreases in a period on moving from left to right. Elements of second period : `underset("Metals")ubrace(Li""Be)""underset("Non-metals")ubrace(B""C""N""O""F)`

Discussion