All of the following elements form amphoteric oxides EXCEPT?
Correct answer: D. Ca
- A. Be
- B. Zn
- C. Al
- D. Ca
Explanation
CaO is a basic oxide, and when it reacts with acid, salt and water are produced. Calcium oxide on reaction with water produces calcium hydroxide, which is a basic solution. The other options, Be, Zn, and Al, are incorrect because beryllium, zinc, and aluminum form amphoteric oxides, meaning they can react with both acids and bases.
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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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