## Chemistry: The Molecular Science (5th Edition)

For an electron in 2p atomic orbital, possible values can be: $n = 2, l= 1, m_{l} = 0, m_{s} = -1/2$ $n = 2, l= 1, m_{l} = 0, m_{s} = 1/2$ $n = 2, l= 1, m_{l} = 1, m_{s} = -1/2$ $n = 2, l= 1, m_{l} = 1, m_{s} = 1/2$