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Chemistry
Periodic Table
Question | Answer |
---|---|
Who was Mendeleev? | Created the periodic table in late 1800's |
Mosley | determined atomic #, which is how the periodic table is organized |
Periods | Horizontal, elements with same p.e.l are in the same period |
Groups | elements that have similar properties, Valance electrons |
Metals | groups 4-12 and groups 1 and 2 beside H and the underneath of the staircase |
Non metals | H, anything that comes after the staircase |
Metalloids | the staircase starting with B and Si |
Alkali Metals | Group 1, very reactive, Fr |
Earth Metals | Group 2 |
Transition Metals | 4-12 |
Noble Gases | group 18 |
Halogens | Group 17, very reactive, F |
Gases on the Periodic table | N, O, F, Cl, All group 18 |
Liquids on Periodic Table | Hg, Br |