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Valency and Oxidation States

Which of the ...

Question

Which of the following pairs show reverse properties on moving along a period from left to right and from up to down in a group:-

A

Nuclear change and electron affinity

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B

Ionization energy and electron affinity

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C

Atomic radius and electron affinity

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D

None of these

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Solution

The correct option is C Atomic radius and electron affinity
Along period from left to right atomic radius decreases while along group up to down atomic radius increases.
same trend followed by electron affinity.

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