Transition Energy from T1g to A2g is the energy of transition from T1g to A2g in orgel Diagram. And is denoted by ET1g to A2g. Transition Energy from T1g to A2g is usually measured using the Diopter for Wave Number. Note that the value of Transition Energy from T1g to A2g is always negative. Typically, the value of Transition Energy from T1g to A2g lies in the range from 0 to 100000.