Can you explain the answer of this question below:The interparticle forces are the strongest inA:AmmoniaB:Sodium BromideC:Ethyl alcoholD:Carbon dioxideThe answer is b.

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Sodium is a.metal and other options are non metal so that it have a strong inter particle force of attraction. that is the reason

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Solids substances have the strongest interparticle force of attraction. In the given substances, sodium bromide is solid, ethyl alcohol is liquid and ammonia and carbon dioxide are gases. So, the particles of Sodium bromide have the strongest force of attraction.

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Sodium bromide have strong interparticular force....so the correct answer is B.

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Because it is a solid and solids particles have highest intermolecular forces as compared to gases and liquids.

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Interparticle Forces Explained
Interparticle forces, also known as intermolecular forces, are the attractive forces between particles (atoms, molecules, or ions) in a substance. The strength of these forces significantly influences the physical properties of substances such as boiling points, melting points, and solubility.
Comparison of Substances
- Ammonia (NH₃): Exhibits hydrogen bonding due to the presence of nitrogen and hydrogen. While these bonds are strong, they are generally weaker than ionic bonds.
- Sodium Bromide (NaBr): This is an ionic compound formed from the electrostatic attraction between sodium ions (Na⁺) and bromide ions (Br⁻). Ionic bonds are among the strongest types of intermolecular forces due to the full charge on the ions.
- Ethyl Alcohol (C₂H₅OH): Contains hydrogen bonding similar to ammonia, but it also has dipole-dipole interactions. However, these forces are typically weaker than those found in ionic compounds.
- Carbon Dioxide (CO₂): This is a nonpolar molecule with only London dispersion forces acting between its molecules. These are the weakest intermolecular forces among the types listed.
Conclusion
The correct answer is option B: Sodium Bromide because:
- Ionic Bonds: Sodium bromide has strong ionic bonds resulting from the complete transfer of electrons between sodium and bromine, creating charged ions that attract each other strongly.
- Comparison with Others: Although ammonia and ethyl alcohol have significant hydrogen bonding, these bonds do not compare to the strength of ionic bonds found in sodium bromide.
In summary, sodium bromide demonstrates the strongest interparticle forces due to its ionic nature, making it the correct choice in this comparison.

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Practice Test/Quiz or MCQ (Multiple Choice Questions) with Solutions of Chapter "Matter in our surroundings" are available for CBSE Class 9Science and have been compiled as per the syllabus of CBSE Class 9ScienceQ. Which of the following has the strongest interparticle force at the room temperature?

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