A+E Networks. On this day in 1969, Americaâs first automatic teller machine (ATM) makes its public debut, dispensing cash to customers at Chemical Bank in Rockville Center, New York.
This modification of the energy levels of a hydrogen atom due to a combination of relativity and spin-orbit coupling is known as fine structure.
By drawing the lewis structure (with carbon as your central atom and the four hydrogens bonded to it by a single bond) you can easily make this observation. By having this Lewis structure, the carbon atom has a stable octet and the hydrogen a douplet.