Electronic Configurations of Atoms Valence electrons are electrons on the outermost shell of the atom. ecronc Configurations of the Elements of the First and Second Rows Element Configuration Valence Electrons H He 2 2 山 122 Be 1222 B 12222p 3 1s22s22p2p N 12222p2p2n 0 122222 F 12222p2p2p月 Ne 12222p2 2013 Pearson Education,Inc. Chapter 1 6 © 2013 Pearson Education, Inc. Electronic Configurations of Atoms • Valence electrons are electrons on the outermost shell of the atom. Chapter 1 6