MHT CET · Chemistry · s Block Elements
Identify the CORRECT decreasing order of melting point of cluster of sodium atoms depending on size.
- A Cluster of \(10^3\) atoms \(>\) cluster of \(10^4\) atoms \(>\) Bulk sodium
- B Bulk sodium \(>\) cluster of \(10^4\) atoms \(>\) Cluster of \(10^3\) atoms
- C Cluster of \(10^4\) atoms \(>\) Cluster of \(10^3\) atoms \(>\) Bulk sodium
- D Bulk sodium \(>\) cluster of \(10^3\) atoms \(>\) Cluster of \(10^4\) atoms
Answer & Solution
Correct Answer
(B) Bulk sodium \(>\) cluster of \(10^4\) atoms \(>\) Cluster of \(10^3\) atoms
Step-by-step Solution
Detailed explanation
Sodium clusters \(\left(\mathrm{Na}_{\mathrm{n}}\right)\) of 1000 atoms melts at \(288 \mathrm{~K}\) while cluster of 10,000 atoms melts at \(303 \mathrm{~K}\) and bulk sodium melts at \(371 \mathrm{~K}\).
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