Select the correct answer.
Which atom or ion is the largest?
A. K+
B. K
C. Ca
D. Ca2+
E. Li
Answer (2)
The largest atom or ion among the given options is K (Potassium), as it has the largest atomic radius compared to Ca, Ca2+, O, and Li. This is due to K's position in the periodic table where atomic radius increases down a group. Additionally, Ca2+ is smaller than neutral Ca since it loses electrons. ;
The largest atom or ion among the given options is B. K (Potassium), due to its position in the periodic table where it has a larger atomic radius compared to the others. K+ is smaller than K, and Ca and Ca2+ have even smaller radii. Therefore, K is the largest.
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