briefly explain the following facts:
1) Boron trifluoride (BF3) melts at - 130 。C
2) Aluminium trifluoride (AlF3) melts at temperature of over 1000。C
chemistry poblem
2010-01-17 3:35 am
回答 (1)
2010-01-17 11:22 pm
✔ 最佳答案
1)BF3 has simple mo;lecule structure, intermolecule forces are only weak vander Vaals' force. Thus it has low melting point.
2)
AlF3 has giant ionic structure, strong ionic bond holds/binds ion together in the ionic lattice. Melting required to break the ionic lattice thuse AlF3 has high melting point.
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參考: Hugo
收錄日期: 2021-04-13 17:03:04
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