Erstellt von rosetinley
vor fast 11 Jahre
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Frage | Antworten |
Atomic Weight | The historical term that was used before relative atomic masses were defined in the 20th century. |
Periodic Table | An arrangement of elements in the order of their atomic numbers, forming groups and periods |
Alkali Metal | Elements in group 1 of the periodic table, e.g. lithium (Li), sodium (Na), potassium (K) |
Transition Element | Element from the central block of the periodic table It has typical metallic properties and forms a coloured compound |
Relative Atomic Mass | The average mass of the atoms of an element compared with carbon-12 (which is given a mass of exactly 12) The average mass must take into account the proportions of the naturally occurring isotopes of the element |
Group | All the elements in each column (labelled 1 - 7 and 0) down the periodic table |
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