Does this transition require energy or emit energy? And can you calculate ∆E or is it invalid?

Question

suwhitney · Answer

Full question: An electron in a carbon atom makes a transition from n=2 to n=3. 
a.)	Does this transition require energy or emit energy?
b.)	Can you calculate the amount of energy involved using $$E=-R _{H}/n ^{2}$$? Calculate ∆E or explain why this is invalid.

suwhitney · Answer

I believe the first part of the question (a) is that is requires energy since it is going from a lower to a higher engery state right? And I think that you cannot calculate the change in enthalpy, but im not sure why..is it for the same reason?

abb0t · Answer

It requires energy. You're moving from a state of lower energy to a higher state of energy.