Inorganic Chemistry> Why BF3 is less stronger than BCl3 ??????...

Why BF3 is less stronger than BCl3 ????????????????????????????

Caralyn Richard , 8 Years ago

Grade 11

3 Answers

Taral Jain

Last Activity: 8 Years ago

Due to effective back bonding BF3 is a weak acid. You should to clear your concept of back bonding. The best book for INORGANIC is JD LEE

Umakant biswal

Last Activity: 8 Years ago

in boron hallides , there is certrain degree of pi bonding involving halogen lone pairs ad empty 2p orbitals of boron , the bonding is strongest in the case of bf3 , and when a boron hallide accept the electron from a donor molecule , this bonding is lost , due to this bf3 resist this changes strongly .
HOPE IT CLEARS

Avi Tiwari

Last Activity: 7 Years ago

The empty 2p orbital orbital of boron overlaps more effectively wit the filled 2p orbital of fluorine thus availability of lp reduces and B thirst for electron reduces thus acidity reduces called as p pi p pi back bonding...in Cl 3p orbitals dontbdo the same due to large energy diff B/W 2p of boron and 3p of Cl...back binding is ineffective ....