Question
Wed February 09, 2011 By: Topper Getahead
trend of
 
1.reactivity
2.thermal stability
3.electrical  conductivity
4.solubility
of alkali metals,alkaline earth metals,boron family,carbon family

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

Expert Reply
Wed February 09, 2011
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
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