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Which of trhe following statements is not correct?A. The first inoisation energies (in ` KJ "mol"^(-1)`) of carbon, silicon , germanium , tin, and lead are 1086, 786,761,708 and 715 respectively:B. Down the group , electronegativity dereases from B to T1 in boron family.C. Among oxides of the elements of carbon family CO is neutral , GeO is acidic and SnO is amphoteric.D. The 4f and 5f inner transition elements are placed seperately at the bottom of the periodic table to maintain its struction.

Answer» Correct Answer - A::C::D


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