the first member of a group usually differs in properties from the rest of the members of the group why
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1st element of a group, have smaller size and high IP, also they dont have d-orbitals so they show different properties like valency, ionic character, maximum valency solubility...
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1st element of a group, have smaller size and high IP, also they don't have d-orbitals so they show different properties like valency,iconic character, maximum valency solubility..
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