The elements of group IA react violently with water and make the solution:
Correct answer: A. Alkali
- A. Alkali
- B. Amphoteric
- C. Acidic
- D. None of these
Explanation
The elements of group I-A, also known as the alkali metals, react violently with water to produce hydrogen gas and a basic solution of the metal hydroxide. The hydroxide ion (OH-) is responsible for the basicity of the solution. Option A is correct because alkali metals are known for forming basic solutions when reacting with water. Option B is incorrect as amphoteric substances can act as both acids and bases, which does not align with the behavior of alkali metals. Option C is incorrect because the solution formed by alkali metals is basic, not acidic. Option D is incorrect as it does not provide a valid answer to the question.
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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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