ST. LOUIS -- When the Boston Red Sox signed Mike Napoli this past winter, there were a number of possible outcomes. He could hit a little, the way he had in 2012, putting up an OPS+ of 113. He could hit a lot, like he had in 2011, with a 173 OPS+ and 30 home runs. Most likely, he'd fall somewhere in between.
The fourth quantum number is the spin quantum number, s. There are only two values for s, +Â½ and -Â½. These are also referred to as 'spin up' and 'spin down'. This number is used to explain behavior of individual electrons as if they were spinning in a clockwise or counterclockwise.
The Magnetic Quantum Number, m l: The third quantum number, m l, is known as the magnetic quantum number. It splits the subshells into individual orbitals. This orbital describes how an orbital is orientated in space relative to other orbitals. i.e. It gives 3D information. The first s subshell has a magentic number of 1. The p subshell has a magnetic number of 3.