na z 11 electron configuration 1s2 2s2 2p6 3s1 7 05

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Unformatted text preview: __ ____ ____ ____ ____ Na (Z = 11) Electron configuration: 1s2 2s2 2p6 3s1 7 05-Sep-13 4p 3d 4s 3p 3s 2p 2s 1s ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ 4s is of lower energy then 3d. that is why we fill it first. ____ ____ ____ ____ Co (Z = 27) Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d7 Filling order for orbitals draw this diagram if u get confused. 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f we simply follow the arrows of this filling order to fill the orbitals in the periodic table. 8 05-Sep-13 Period 4 and beyond Up to the end of the third period, the ordering of orbitals according to energy follows a natural progression. For example, the orbitals with n = 1 are completely filled before orbitals with n = 2, and once those are completely filled we move on to orbitals with n =3. However, when we hit period 4 something different happens. The 4s orbitals are lower in energy than the 3d orbitals and so are filled first. The filling of the five 3d orbitals (holding a maximum of 10 transition metals electrons) represents the first row of the ________________, Sc to Zn. 9 05-Sep...
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This document was uploaded on 02/18/2014.

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