For 10 points, name
 this electronic orbitals that are larger than s and smaller than d orbitals.
Bent's rule states that atomic orbitals directed towards electronegative groups have this character, and
 part of the derivation of the Lamb shift relies on the fact that the nonrelativistic wave function for these
 entities vanishes at the origin. In crystal field theory, a group of them is labeled t sub 1u. These entities
 generally have n minus 2 radial nodes, and the magnetic quantum numbers of these entities vary from
 negative 1 to 1. They overlap perpendicularly to form pi bonds. They are shaped like dumbbells and are
 mutually perpendicular to each other, intersecting at the origin. They hold 6 electrons. For 10 points, name
 this electronic orbitals that are larger than s and smaller than d orbitals.
Bent's rule states that atomic orbitals directed towards electronegative groups have this character, and
 part of the derivation of the Lamb shift relies on the fact that the nonrelativistic wave function for these
 entities vanishes at the origin.
{p} orbitals