I have a chemistry question

Question

which of the following energy-level changes for an electron is most energetic?

a. 3 to 2

b. 4 to 2

c. 5 to 2

d. 6 to 2

e. all energy level changes are the same

Answer 1

D. 6-2 because this is a highly favorable transition from an outer orbital to a second orbital closer to the positive nucleus for an electron (attractive charges)

Answer 2

Assuming that one labels one's electron energy level diagram in order of increasing energy, as is customary, the correct answer is, "d. 6 to 2."  This is the most energetic electronic transition because it represents the largest change in energy for an electron of the available answers.  

The increasing numbers represent the increasing energy levels of  an excited state electron.  As a result, "6" represents the highest available energy level.  Also, "2" represents the lowest energy level.  So a transition from "6" to "2" would represent the largest change in energy--And is therefore the most energetic.

Hope that helps.  Look up some stuff on atomic energy level diagrams in a general chem text and eventually Jablonski diagrams--It will help you in future studies...  

Answer 3

d.  Presumably one is talking about the principal quantum number, n.