Which of the following is not correct statement for periodic classification of elements?

The properties of elements are the periodic functions of their atomic number

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Non-metallic elements are less in number than metallic elements

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For transition elements, the last electron enters into (n - 2) d-subshell

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None of these

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Solution

The correct option is C For transition elements, the last electron enters into (n - 2) d-subshell
In the periodic classification of elements:
The properties of elements are the periodic functions of their atomic number.
Non-metallic elements are less in number than metallic elements.
For transition elements, the last electron enters into (n - 1) d-subshell.
option C

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Similar questions

The statement that is not correct for periodic classification of elements is
(a) The properties of elements are the periodic function of their atomic numbers
(b) Non-metallic elements are less in numbers than metallic elements
(c) For transition elements, the 3d orbitals are filled with electrons after 3 p - orbitals and before 4s orbitals
(d) the first ionization enthalpies of elements generally increase with the increase in atomic number as we go along a period

Q. Statement 1: Mendeleev's periodic law states that the properties of elements are the periodic function of their atomic mass.

Statement 2: The modern periodic law states that the properties of elements are the periodic function of their atomic number.

Q. Select the correct alternative from the statements that are not related to Mendeleev's periodic table.

(a) The physical and chemical properties of elements are the periodic function of their atomic number.

(b) The elements with higher atomic weight were placed before elements with lower atomic weights.

(d) The atomic number has been established as the fundamental characteristic of elements based on the work on x-ray spectra of elements.

Q. Copy and complete the following sentences choosing the correct word or words from those given in the brackets, at the end of each sentence:
(1) The properties of the elements are a periodic function of their _________ (atomic number, mass number, relative atomic mass).
(2) Moving across a ________ of the periodic table, the elements show increasing _______ character (group, period, metallic, non-metallic).
(3) The element at the bottom of a group would be expected to show ________ metallic character than the element at the top (less, more).
(4) The similarities in the properties of elements belonging to a group is because they have the same _________ (electronic configurations, number of outer electrons, atomic number).

Q. "The properties of elements are periodic functions of their atomic number" is given by __________.

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