The first try at arranging in rows of & based on atomic mass, broke down at transition metals and was dismissed due to no gaps/mixed non/metals and diff properties
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Mendeleev
Russian scientist who left gaps which were filled to form the modern table
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Electronic structure
How the electrons in an atom are arranged
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Group Number
Eg Group 1/7 correspond to number of outer shell electrons
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Shielding
When alot of inner electrons get in the way of nuclear charge
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Alkali metals
GROUP 1 Lithium, Sodium and Potassium- silvery soft solids kept in oil that burn skin. Down+ more reactive higher m/b points, 1 outer electron, ionic w non metals, move in water and squeaky pop
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Halogens
GROUP 7 Fluorine etc Non metals w coloured vapous, down= less reactive and low m/b points. Ionic bonds w metals
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Transition metals
Big clump of 'typical metals' in table, often more than 1 ion which normally form diff colours like weathered copper and gemstones
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Other cards in this set
Card 2
Front
Russian scientist who left gaps which were filled to form the modern table
Back
Mendeleev
Card 3
Front
How the electrons in an atom are arranged
Back
Card 4
Front
Eg Group 1/7 correspond to number of outer shell electrons
Back
Card 5
Front
When alot of inner electrons get in the way of nuclear charge
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