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Question: Answered & Verified by Expert
Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?
Chemistrys Block ElementsJEE MainJEE Main 2022 (25 Jun Shift 1)
Options:
  • A Sr2+
  • B Mg2+
  • C Ca2+
  • D Be2+
Solution:
1680 Upvotes Verified Answer
The correct answer is: Sr2+
Larger the size of cation, lesser it gets hydrated. Hence, show higher mobility in aqueous solution. Among the given species Sr2+ ion has the largest size, so hydrate to smaller extent and show the highest mobility.

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