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Multiple choice

The correct order of hydration enthalpies of alkali metal ions is

  1. Na+ > Li+ > K+ > Rb+ > Cs+

  2. Li+ > K+ > Na+ > Rb+ > Cs+

  3. Li+ > Na+ > K+ > Rb+ > Cs+

  4. Cs+ > Rb+ > Na+ > K+ > Li+

  5. Cs+ > Rb+ > K+ > Na+ > Li+

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct order of hydration enthalpies is Li+ > Na+ > K+ > Rb+ > Cs+.

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