2011年5月11日星期三

Period Table Trend

Metallic Properties:
- the change from metallic to non-metallic going from left to right across the table
- elements become more metallic going down a family


Atomic Radius:
- Decreases across a row from left to right, increase down a group




Reactivity:
- metal&non-metal show different trend
- most metal: Francium
- most non-metal: Fluorine


Ion charge:
- elements ion charges depend on their group


Melting&Boiling point:
- centre of the table-->highest melting/boiling point
- noble gases have lowest melting point


Ionization Energy
- increases up and right
- hellium highest
- Francium lowest


Electronegativity:
- fluorine has highest electronegativity
- Francium has lowest electronegativity

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