Which Of The Following Ions Has The Smallest Radius in How To

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Which Of The Following Ions Has The Smallest Radius. So we've got some cat ions as well as on ions. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period.

Periodic trends
Periodic trends from www.slideshare.net

So therefore, elements with a positive charge, will have a smaller ionic radius. A is the correct answer for your question. Thus, helium is the smallest element, and francium is the largest.

Periodic trends

So here we're looking at the largest radius out of a series of elements. Thus, helium is the smallest element, and francium is the largest. While comparing the ionic radius, we should consider all the points. So here we're looking at the largest radius out of a series of elements.