Discuss some the physical properties of the elements which exhibit periodicity .
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price of pen=15.90
price of pencil=2.85
total money spent=23.75+15.90+2.85
=42.5
money given to shopkeeper =50
money given back to rohit=50-42.5
=7.5
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The properties of elements in the same group of the periodic system are, although similar, not identical. The trend in properties from the lighter to the heavier elements may be attributed to changes in the strength of binding of the outer electrons and especially to the increasing size of the atoms.
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