derive the term symbols for the excited triplet state 1s1 2s1 and higher excited triplet state 1s1 2p1 ol he. is the transition from 1s1 2s1 to 1s1 2p1 allowed ? give reasors for your answer.
The symbol of this configuration has 2 electrons at the local level, so it can be any element of the 2 main subgroup. The transition is possible from one orbital to the next only with the condition that the orbital from which the transition is carried out does not remain without electrons, so such a transition is impossible.