Give scientific reasons:
1. Atomic size increases down the group.
2. Metallic character decreases from left to right in a period.
3. Elements in the same group show same valency.
Why metallic character decreases across a period and increases down a group?
We know that the metallic characters increase down a group whereas it decreases across a period . In this sense what about the non-metallic characters of the non-metals?
Where does non-metallic character of elements increase? Across a period or down a group.
Metallic character of elements decreases from left to right in a period while it increases while in moving down a group. Explain