A metallic oxide placed in water would most likely yield
Correct answer: B. A base
- A. An acid
- B. A base
- C. A metallic anhydride
- D. A basic anhydride
Explanation
Metal oxides, such as calcium oxide, are known as basic anhydrides because they react with water to produce bases. For example, when calcium oxide (CaO) is placed in water, it reacts to form calcium hydroxide (Ca(OH)2), which is a base. Thus, the correct answer is a base. The other options are incorrect because metal oxides do not form acids or 'metallic anhydrides' when reacting with water, and 'basic anhydride' refers to the oxide itself rather than the product of its reaction with water.
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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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