Keywords: Boron-trifluoride-pi-bonding-2D.png Structural formula of boron trifluoride BF<sub>3</sub> showing Ï bonding involving filled fluorine 2p orbitals formally lone pairs overlapping with the empty 2p orbital on boron and donating electron density to relieve boron's electron deficiency Own 2008-08-27 Ben Mills Benjah-bmm27 Images by Ben Mills Boron trifluoride |