Problem: Sort the following Group 3A(13) elements in order of increasing atomic radius.

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The Periodic table below shows the trend for atomic radius. The elements mentioned in the question are also encircled. We can see that the elements are all in one column so it's fairly easy to arrange them according to the trend which is decreasing from bottom to top:

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Sort the following Group 3A(13) elements in order of increasing atomic radius.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Atomic Radius concept. If you need more Atomic Radius practice, you can also practice Atomic Radius practice problems.