Linear Lone Pairs: sp 3 d NOTES: This molecule is made up of 5 sp 3 d hybrid orbitals. Three orbitals are arranged around the equator of the molecule with bond angles of 120 o . Two orbitals are arran...Linear Lone Pairs: sp 3 d NOTES: This molecule is made up of 5 sp 3 d hybrid orbitals. Three orbitals are arranged around the equator of the molecule with bond angles of 120 o . Two orbitals are arranged along the vertical axis at 90 o from the equatorial orbitals. The shape of the orbitals is trigonal bipyramidal. All three equatorial orbitals contain lone pairs of electrons. The three atom molecule has a linear shape. Charles Ophardt (Professor Emeritus, Elmhurst College); Virtual Chembook
