write the four quantum numbers which describe the location of the highest energy electron of the following: 1. N 2. Ni 3. Br 4. Xe 5. Re
Answer (1)
Highest Energy ElectronNNiBrXeReN (Nitrogen, Z=7):Configuration: 15* 25* 2p* - Highest in 2pQuantum numbers: n = 2, 1 = 1, ml = -1 to +1 (choose any: 0), ms = +½Example: (2, 1, 0, + ½)Ni (Nickel, Z=28):Configuration: (Ar) 3d* 4s* - Highest in 3dQuantum numbers: n = 3, 1 = 2, ml = +2 (last added electron), ms = +½Example: (3, 2, +2, + ½)Br (Bromine, Z=35):Configuration: [Ar) 3d*° 4s* 4p* - Highest in 4pQuantum numbers: n = 4, l = 1, ml = -1, ms = -½Example: (4, 1, -1, -½)Xe (Xenon, Z=54):Configuration: [Kr) 4d'° 5s* 5p* - Highest in 5pQuantum numbers: n = 5, 1 = 1, ml = 0, ms = -½Example: (5, 1. 0. ½)Re (Rhenium, Z=75):Configuration: [Xe] 4f* 5d* 6s* - Highest in 5dQuantum numbers: n = 5, 1 = 2, ml = 0, ms = +½Example: (5, 2, 0, +½)
