Question

How does the energy level of an electron affect how atoms bond with other atoms?

Answer 1

The energy levels of electron affect the way atoms bond to another atoms.

If the energy level of an electron for an atom is lower (say atom A), that means it is more electronegative in nature, the bond thus formed of this atom (A) with another atom (B) whose electron has energy level higher than the A atom would have shared pair of electrons shifted more towards atom A. Such is the case with for example CO, here Oxygen electron energy levels are lower than Carbon electron energy levels.