Which of the following oxide is formed by alkali metals?
Correct answer: A. Basic oxides
- A. Basic oxides
- B. Acidic oxides
- C. Amphoteric oxides
- D. Both B and C
Explanation
Alkali metals are basic. The oxides they form are also basic due to this. They react strongly with water and create hydroxide ions and hydrogen gas, leaving a basic solution.
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About Reactions of Group I Elements
Group I elements have one valence electron, so their reactivity increases down the group as ionisation energy decreases. Their reactions with water, oxygen, hydrogen and halogens produce hydroxides, oxides, hydrides and halides, while the behaviour of lithium differs from the heavier metals because of its small ionic size.
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