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प्रश्न
The statement that is not correct for periodic classification of elements is ______.
पर्याय
The properties of elements are periodic function of their atomic numbers.
Non metallic elements are less in number than metallic elements.
For transition elements, the 3d-orbitals are filled with electrons after 3p-orbitals and before 4s-orbitals.
The first ionisation enthalpies of elements generally increase with increase in atomic number as we go along a period.
उत्तर
The statement that is not correct for periodic classification of elements is for transition elements, the 3d-orbitals are filled with electrons after 3p-orbitals and before 4s-orbitals.
Explanation:
For transition elements, the 3d-orbitals are filled with electrons after 3p and 4s-orbitals and before 4p-orbitals. The order of filling the orbitals is 2s, 2p, 3s, 3p, 4s, 3d4p, 5s, 4d, 5p, 6s, …
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संबंधित प्रश्न
Write the general outer electronic configuration of d- block elements.
All transition elements are d-block elements, but all d-block elements are not transition elements. Explain
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The incorrect statement among the following is ______
The incorrect statement among the following is ______.
The incorrect statement among the following is ______.
