I need help with this chemistry flame test lab discussion question.

Question

"List the metals used in this lab in increasing order of the energy of the light emitted."
We tested BaCl2, CaCl2, CuCl2, FE(NO3)3, KCl, LiCl, NaCl, & Sr(No3)2.
I'm not completely sure how to know the energy of the light emitted. Please help!

Answer 1

See your post above.