Periodicity

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• gies (He. Ne and Ar) and the greg IV elements and S
• Plet a graph of density againat etomis number for the first 20 elements
• Pet a graph of being point against atomic number for the first 20 ei
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• Period Table
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• Elements in the
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• y your detabek, complete the falley
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• Atomic size
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• where the sucker charge ran the renic ner) is shown is the centre and the electron
• arrangeret to place around the cusuth the selcar charge (atm)
• electron arrangment can be
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