Which of the following elements forms normal oxide when treated with oxygen?
Correct answer: B. Li
- A. K
- B. Li
- C. Na
- D. Cs
Explanation
When exposed to oxygen, lithium forms the normal oxide Li2O. This is why option B is correct. The other options, potassium, sodium, and caesium, form superoxide or peroxide compounds when treated with oxygen, making them incorrect choices.
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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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