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Grade: 11
        Why BF3 is less stronger than BCl3 ????????????????????????????
one year ago

Answers : (3)

Taral Jain
39 Points
							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
						
one year ago
Umakant biswal
5349 Points
							
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 
one year ago
Avi Tiwari
34 Points
							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 ....
						
one year ago
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