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The statement that is not correct for periodic classification of elements isA. The properties of elements are periodic function of their atomic numbersB. Non metallic elements are less in number than metallic elementsC. For transition elements, the 3d-orbitals are filled with electrons after 3p-orbitals and before 4s-orbitalsD. The first ionisation enthalpies of elements generally increase with increase in atomic number as we go along a period.. |
Answer» Correct Answer - C | |