The hydroxide which is best soluble in water is:
Correct answer: A. Ba(OH)2
- A. Ba(OH)2
- B. Mg(OH)2
- C. Sr(OH)2
- D. Ca(OH)2
Explanation
Barium hydroxide (Ba(OH)2) is the correct answer. The solubility trend of hydroxides of Group 2A metals increases as you move down the group due to the larger size of the cation and weaker ion-dipole interactions. This results in barium hydroxide being the most soluble among the options provided. Magnesium hydroxide, strontium hydroxide, and calcium hydroxide are less soluble in water compared to barium hydroxide.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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