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Which of the following statements is not...

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

A

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

B

Non - metallic elements are lesser in number than the metallic elements

C

The first ionization energies of the elements along a period do not vary in a regular manner with increase in atomic number

D

For transition elements , the d - electrons are filled monotonically with increase in atomic number

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The correct Answer is:
D
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