| Group1 | - Known as Alkali Metals
- Very reactive
- Never found free in nature
- React readily with water
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| Group2 | - Known as Alkaline earth elements
- All are metals
- Occur only in compounds
- React with oxygen in the general formula EO (where O is oxygen and E is Group 2A element)
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| Group3 | - Metalloids
- Includes Aluminum (the most abundant metal in the earth)
- Forms oxygen compounds with a X2O3 formula
|
| Group4 | - Includes metals and nonmetals
- Go from nonmetals at the top of the column to metals at the bottom
- All oxygen form compounds with a XO2 formula
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| Group5 | - All elements form an oxygen or sulfur compound with E2O3 or E2S3 formulas
|
| Group6 | - Includes oxygen, one of the most abundant elements.
- Generally, oxygen compound formulas within this group are EO2 and EO3
|
| Group7 | - Elements combine violently with alkali metals to form salts
- Called halogens, which mean "salt forming"
- Are all highly reactive
|
| Group8 | - Least reactive group
- All elements are gases
- Not very abundant on earth
- Given the name noble gas because they are not very reactive
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The bonding between atoms changes their makeup, therefore changing their structures.
