Question:

Which statement(s) is (are) false for the periodic classification of elements?

Updated On: Jun 23, 2023
  • The properties of the elements are the periodic functions of their atomic numbers
  • Non-metallic elements are lesser in number than the metallic elements
  • The first ionization energies of the elements along a period do not vary in a regular manner with increase in atomic number
  • For transition elements, the d-electrons are filled monotonically with increase in atomic number
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The Correct Option is D

Solution and Explanation

The option ( d) is false as $d$ -electrons do not filled monotonically with the increase in atomic number.
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Chemistry is a vast subject and for understanding its significance we can take help of following points:

  • Chemistry plays an important role in understanding various subjects like physics, geology and biology.
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There are two ways of classifying the matter:

(A) Physical Classification:

Matter can exist in three physical states:

  1. Solids - have definite volume and definite shape
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Based upon the composition, matter can be divided into two main types:

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