Question

Collect information regarding metallic character of elements of IA group and prepare
report to support the idea of metallic character increases in a group as we move from
top to bottom and also reactivity of 1A group

Answer 1

Collect information regarding metallic character of elements of IA group and prepare

report to support the idea of metallic character increases in a group as we move from

top to bottom and also reactivity of 1A group

Explanation:

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.

Answer 2

Answer:

Explanation:

The tendency of an element to lose electron and form positive ions is called metallic character. The elements to the left of the periodic table i.e., IA group have greater tendency to lose electrons so, they are strong metals. Li, Na, K, Rb, Cs (IA) are strong metals as they lose one electron and posses high reactivity.  As we go down in a group the atomic size increases and electrons in the outer shell experiences less nuclear attractions and so can lose electron easily. Thus increased metallic character. Ionization energies decreases from LI to Cs and atomic radius increases from Li to Cs in IA group. So, metallic character increases from Li to Cs in IA group.