can u plz plz plz tell me following trend of periodic table plz they are really confusing help me plz

Asked by topper getahead | 9th Feb, 2011, 05:31: PM

Expert Answer:

Dear Student
 
1. Reactivity of metals decreases as you go from left to right across a period. 
Group - reactivity increases as you go down a group 
In case of non-metals 
Period - reactivity increases as you go from the left to the right across a period. 
Group - reactivity decreases as you go down the group. 
 
2. Thermal stability
Increases in a period and decreases down the group.
 
3. Electrical conductivity: First it increases (in metals) and then decreases in a peroid and increases in a group from up to down.
 
For an element to conduct electricity, it must contain electrons that are free to move. In general, metals are good conductors of electricity and non-metals are poor conductors of electricity.
 
4. Solubility Increases in a period and decreases down the group.
 
We hope that clarifies your query.
Regards
Team
Topperlearning

Answered by  | 9th Feb, 2011, 07:24: PM

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