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Question

The elements which are in the left most of the periodic table have properties that have increasing values as atomic number increases include which of the following?

I. Ionization energy (potential)
II. Atomic radius
III. Atomic mass

A
I only
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B
III only
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C
I and II only
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D
II and III only
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E
I, II and III
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Solution

The correct options are
A III only
B I only
As the atomic number increases in the same orbital, the ionisation energy and atomic mass increases whereas atomic radius decreases due to increase in nuclear charge.

Hence the correct options are A and B.

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