This man names a rule that predicts a property that is contrasted with one in which orbitals are twisted.
A set of approximations named for this chemist sets overlap integrals and resonance integrals between non-neighbors equal to zero, and are used in a method named for him. The extended version of that method considers sigma orbitals, unlike the basic version which only considers pi bonds. That extended version is the basis for the Woodward Hoffman rules. This man names a rule that predicts a property that is contrasted with one in which orbitals are twisted. He is the second namesake of an equation used to calculate the mean ionic activity coefficient of an electrolytic solution, an equation also named for Debye. For ten points, name this formulator and namesake of a rule which is the opposite of Mobius aromaticity, sometimes known as the 4n+2 rule.
A set of approximations named for this chemist sets overlap integrals and resonance integrals between non-neighbors equal to zero, and are used in a method named for him.
Erich {Hückel}