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peridic table
| vocab. words | term |
|---|---|
| periodic. | decribes somthing that occurs or repeats in regular intervals. |
| pperiodic law. | the law that states that the repeating chimacal and physical properties of elements. change periodically with the atomic numbers of the elements |
| period. | in chemistry, a horizontal row of elements in the periodic table. |
| group. | a vertical colomn of elements in the peridic table; elements in a group share chemical properties. |
| alkali metal. | one the elements of group 1 of the periodic table. |
| alkaline-earth metal. | one of th elements of group 2 of the periodic table. |
| halogen | one of the elements of groug 17 of the periodic table. |
| nodle gas | one of the elements of group 18 of the periodic table. |