E Atomic Radius

Sample Problem E Ofthe elements magnesium, Mg, chlorine, Cl, sodium, Na, and phosphorus, P, vdiich has the largest atomic radius Explain your answer in terms of trends in the periodic table. 

SOLVE All of the elements are in the third period. Of the four, sodium has the lowest 

Which of the following elements has the largest atomic radius Li, O, C, or F Which has the smallest atomic radius  

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