Periodic Table
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8 Terms
1
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What are the three primary categories?
- Metals
- Non-Metals
- Metalloids
- Non-Metals
- Metalloids
2
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What sub groups are there for metals?
- Alkali Metals
- Alkaline Earth Metals
- Transition Metals
- Inner Transition Metals
- “Other” Metals
- Alkaline Earth Metals
- Transition Metals
- Inner Transition Metals
- “Other” Metals
3
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What sub groups are there for non-metals?
- Halogens (column 17)
- Noble Gases (column 18)
- Other non-metals (columns 14-16)
- Noble Gases (column 18)
- Other non-metals (columns 14-16)
4
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Who categorized the elements into 4 groups?
Antoine Lavoiser
5
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Who discovered that the periodic table is organized by atomic mass (but was proved to be false later) and the law of octaves?
John Newlands
6
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Who found that elements were actually ordered by number of protons (atomic number)?
Henry Mosely
7
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Who organized elements into rows + columns?
Lothar Meyer + Dimitri Mendeleev
8
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Who left blanks in the periodic table for elements that were yet to be discovered?
Dimitri Mendeleev
Note 
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