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An Intiative by Sri Chaitanya
a
The properties of elements are the periodic functions of their atomic numbers.
b
For transition elements the ionisation energies increase gradually with increase in atomic number.
c
Non-metallic elements are less in number than metallic elements.
d
The first ionisation energies of elements along a period do not vary in a regular manner with an increase in atomic number.
answer is D.
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