NCl3 is endothermic,nf3 is exothermic?
NCl3 is endothermic,nf3 is exothermic?
Aayush Agarwal , 10 Years ago
Grade 12
Organic Chemistry> NCl3 is endothermic,nf3 is exothermic?...
2 Answers
Harishwar
Last Activity: 10 Years ago
The NN bond energy is huge (-ve) and formation will only be thermodynamically allowed if X-X is low -ve (the F-F bond strength is anomalously small) and the N-X bond energy is high (-ve). The N-F covalent bond is much stronger than the N-Cl bond due to better 2p-2p overlap.NCl3 can be made but is explosively unstable
Suraj Prasad
Last Activity: 10 Years ago
the reason lies in the difference of size . N-Cl bond is weak and N-F bond is strong. So it is exothermic
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