SiO2 is the only oxide that reacts with:
Correct answer: B. KOHaq
- A. HClaq
- B. KOHaq
- C. Steam
- D. SO3
Explanation
SiO2 is an acidic oxide and reacts with strong bases. Among the given options, it will react with hot, concentrated KOH(aq) due to the need for strong conditions to overcome its extensive covalent bonding. It does not react with HCl(aq) because it is not a base. It doesn't react with steam as the strong covalent network structure of SiO2 is too stable to break under such conditions. Lastly, SO3 is also an acidic oxide, and thus, does not react with another acidic oxide like SiO2.
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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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