Question

Across the period ,ionic radii _______

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Answer 1

Explanation:

Trends in Ionic Radius Across a Period

In period 3 we find that the atomic radius first decreases and then suddenly increases and then again it slowly decreases. This is because the starting elements in a period tend to form cations, and the elements towards the end of a period tend to form anions.

Answer 2

Answer:

Ionic radii decreases across a period. This is due to the fact that metal cations lose electrons, causing the overall radius of an ion to decrease.