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What are the chemical twins ? Write 'two ' examples |
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Answer» Solution :A pair of elements having similar properties due to similar atomic radii and number of valence electrons are CALLED chemical twins . They are d - block elements of 5th and 6th [PERIOD of 4d - series and5d -series respectively . Exampleis Zr and HF, Nb and Ta, MO and W, TC and Re are pair of chemical twin elements . |
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