Which of the following elements forms insoluble oxide when treated with water?
Correct answer: A. Be
- A. Be
- B. Mg
- C. Ca
- D. Sr
Explanation
Beryllium forms an insoluble oxide (BeO) when it reacts with oxygen, making it practically insoluble in water. This is why option A is correct. Magnesium, calcium, and strontium oxides have varying degrees of solubility in water, resulting in their respective hydroxides, but they are not as insoluble as beryllium oxide, leading to options B, C, and D being incorrect.
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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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