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13) In modern periodic table there are .... groups14161718​

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The ELEMENTS of groups, 1,2,13,14,15,16 and 17 are COLLECTIVELY called Representative or normal elements. These are s block (groups 1 and ) and p block (groups 13, 14,15, 16 and 17) elements respectively. Noble gases belong to zero group or group 18 of the periodic table. TRANSITION elements are d block elements

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