Which of the following elements can produce H2 gas when treated with sodium hydroxide?
Correct answer: A. Be
- A. Be
- B. Mg
- C. Ca
- D. Sr
Explanation
Beryllium is amphoteric, which means it can react with both acids and bases (alkalis). When beryllium reacts with alkalis like sodium hydroxide, it forms beryllium hydroxide and hydrogen gas.
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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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