Problem: Arrange the following elements in order of decreasing atomic radius: Sc, Sr, Cl, P, Ga, Ne. Rank elements from largest to smallest

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We’re being asked to rank the given set of elements in order of decreasing atomic radius.

Atomic radius represents the distance from the nucleus to the outer shell of an element. 

Trend of the atomic radius in the periodic table:

decreases going from left to right of a period

increases going down a group


For the given elements, let’s check their location in the periodic table and see how they fall in the trend mentioned.

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Problem Details

Arrange the following elements in order of decreasing atomic radius: Sc, Sr, Cl, P, Ga, Ne. Rank elements from largest to smallest

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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 Periodic Trends: Atomic Radius concept. You can view video lessons to learn Periodic Trends: Atomic Radius. Or if you need more Periodic Trends: Atomic Radius practice, you can also practice Periodic Trends: Atomic Radius practice problems.