Which of the following is the most stable cation?
A)I
B)II
C)III
D)IV

Name: Which of the following is the most stable cation? A)I B)II C)III D)IV
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Question

Which of the following is the most stable cation? 
A)I 
B)II 
C)III 
D)IV

Quizplus · Accepted Answer

Cation stability is determined by the size and charge of the ion. Smaller ions are more stable than larger ions because they have a higher charge density, allowing them to attract more electrons to stabilize the charge. Among the given cations, III (Mg2+) has the smallest ionic radius and the highest charge, making it the most stable cation.

Which of the Following Is the Most Stable Cation