Periodic Trend: Atomic Radius Video Lessons

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Problem: Of the following, which atom has the largest atomic radius? A) Cl B) Br C) Na D) K

FREE Expert Solution

We’re being asked to identify the atom that has the largest atomic radius.

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

The trend of the atomic radius in the periodic table:

decreases going from left to right of a period
increases going down a group

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Problem Details

Of the following, which atom has the largest atomic radius? 

A) Cl 

B) Br 

C) Na 

D) K

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