MHT CET20239 May 2023Evening ShiftChemistrys Block ElementsActual
Identify the CORRECT decreasing order of melting point of cluster of sodium atoms depending on size.
Options
- ACluster of 10^3 atoms > cluster of 10^4 atoms > Bulk sodium
- BBulk sodium > cluster of 10^4 atoms > Cluster of 10^3 atoms
- CCluster of 10^4 atoms > Cluster of 10^3 atoms > Bulk sodium
- DBulk sodium > cluster of 10^3 atoms > Cluster of 10^4 atoms
Correct answer
B. Bulk sodium > cluster of 10^4 atoms > Cluster of 10^3 atoms
Step-by-step solution
Sodium clusters ( Na _ n ) of 1000 atoms melts at 288 ~K while cluster of 10,000 atoms melts at 303 ~K and bulk sodium melts at 371 ~K .