Transcript 4su 2pg 3sg 1pu 2su C 1sg C-C C 4su 2pg 3sg 1pu 2su C 1sg C-C C anti-bonding anti-bonding non-bonding non-bonding Two “lone pairs” but not equivalent! bonding Two “O-H bonds” bonding Mainly B 2p lcao’s Note p bonds! Mainly B 2s-F 2p lcao’s Mainly F 2s lcao’s.