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Chem Chapter 5
Question | Answer |
---|---|
physical and chemical property of the elements are periodic functions of their atomic numbers | periodic law |
atomic mass | mendeleev |
atomic number | Mosley |
periodic | a regular repeating pattern |
synthesized | man made |
silvery and soft, never found in nature, combined vigorously with non metals | alkali metals |
harder, denser, stronger then alkali metals , less reactive then alkali metals never found as free elements | alkaline metals |
metals with metallic properties. good conductors of electricity less reactive then groups 1 or 2. have variable oxidation numbers. | d block elements/ transition metals |
verys greatly , includes non metals except H and He, and the zix metaloids. | P block elements/ main-group elements |