Bonding in Alkenes Electrons in pi bond are half of loosely held.→More bond reactive a bond held tightly half of开 The double bond acts as a bond nucleophile attacking electrophilic species. sp2 Carbocations are intermediates in some of these reactions. empty p orbital 2013Pearson Education,Inc. These reactions are called electrophilic additions. 5 2013 Pearson Education Inc.Bonding in Alkenes • Electrons in pi bond are loosely held. → More reactive • The double bond acts as a nucleophile attacking electrophilic species. • Carbocations are intermediates in some of these reactions. • These reactions are called electrophilic additions. © 2013 Pearson Education Inc. 5 sp2 sp3