9. The general structure of the porphyri..-阿摩線上測驗
9. The general structure of the porphyrin molecule is
shown on the right side. This molecule is planar and so
we can approximate the π electrons as being confined
in a square with the length a = 10 The porphyrin
molecule has "22"π electrons. According to the
particle in a two-dimensional (2D) box, the energy
states are given by
where nx and ny are quantum numbers. Assume that each energy levet in the box is capable
of holding no more than two electrons. What is the electronic transition responsible for the
promotion of an electron from the highest filled energy level to the lowest empty energy level?
(A) E(3,3)→E(4,2)
(B)E(3,2)→E(4,1)
(C) E(2,3) → E(2,4)
(D) E(3,3)→E(4,3)
(E) E(3,4) → E(4,4)