Slater's law is the law used to calculate the effective nuclear charge. Zeff = Z- (shielding constant).
Slater's law
discuss
Slater's law is the law used to calculate the effective nuclear charge. Zeff = Z- (shielding constant).
- Name
- Slater's law
- Name
- Slater rules
- Formula
- Zeff = Z-
- Function
- Calculate Effective Nuclear Charge
- Application
- Calculate the value of an electron in an atom
The rule used to calculate the effective nuclear charge. Zeff = Z- (shielding constant)
The Slater rule can be used to roughly divide the electrons in the atom into the following groups
(1s) (2s, 2p) (3s, 3p) (3d) (4s, 4p) (4d) (4f) (5s, 5p) (5d) (5f) (6s, 6p) (6d) (6f)
a) Each group on the right side of the shielded electron has = 0 to the shielded electron
It can be considered that the outer electrons have no shielding effect on the inner electrons.
b) = 0.3 between two electrons in 1s orbit, = 0.35 between other layered electrons with the same main quantum number
c) When the shielded electron is ns or np, then each electron of the main quantum number (n-1) has a = 0.85, and each electron smaller than (n-1) has a = 1.
d) When the shielded electrons are nd or nf, the shielding constant = 1 for each group of electrons to their left
When calculating the value of an electron in an atom, you can add the value of the shielding electron to the electron to obtain
Example 1 Calculate the value of other electrons for a 3p electron in an aluminum atom
The electronic structure of the aluminum atom is 1s22s22p63s23p1 = 2 × 0.35 + 8 × 0.85 + 2 × 1 = 9.5
