Which one of the following is not a periodic property i e does not show any trend on moving from one...........

General Science (Easy) Chemistry

Which one of the following is not a periodic property i.e., does not show any trend on moving from one side to the other in the periodic table?

Atomic size

Valency

Radioactivity

Electronegativity

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Explanation:

Radioactivity

Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles or photons.