Which of the following hydroxides has the maximum solubility in water?
Correct answer: D. Ba(OH)2
- A. Mg(OH)2
- B. Ca(OH)2
- C. Sr(OH)2
- D. Ba(OH)2
Explanation
For the hydroxides of the alkaline earth metals (Group 2), solubility in water increases as you move down the group. This is because the lattice energy decreases more significantly than the hydration energy down the group, making the dissolution process more favorable for the larger cations.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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