Slater's Rules Calculator
Complete application of Slater's rules showing shielding calculations for all electron groups.
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d6
Slater Grouping
(1s)2(2s,2p)8(3s,3p)8(3d)6(4s,4p)2
Group: 1s
2 electron(s)| Shielding From | n | Constant | Contribution |
|---|---|---|---|
| 1s (same) | 1 | 0.3 | 0.30 |
Ο
0.30
Z - Ο
26 - 0.30
Zeff
25.70
Group: 2s,2p
8 electron(s)| Shielding From | n | Constant | Contribution |
|---|---|---|---|
| 2s,2p (same) | 7 | 0.35 | 2.45 |
| 1s | 2 | 0.85 | 1.70 |
Ο
4.15
Z - Ο
26 - 4.15
Zeff
21.85
Group: 3s,3p
8 electron(s)| Shielding From | n | Constant | Contribution |
|---|---|---|---|
| 3s,3p (same) | 7 | 0.35 | 2.45 |
| 1s | 2 | 1 | 2.00 |
| 2s,2p | 8 | 0.85 | 6.80 |
Ο
11.25
Z - Ο
26 - 11.25
Zeff
14.75
Group: 3d
6 electron(s)| Shielding From | n | Constant | Contribution |
|---|---|---|---|
| 3d (same) | 5 | 0.35 | 1.75 |
| 1s | 2 | 1 | 2.00 |
| 2s,2p | 8 | 1 | 8.00 |
| 3s,3p | 8 | 1 | 8.00 |
Ο
19.75
Z - Ο
26 - 19.75
Zeff
6.25
Group: 4s,4p
2 electron(s)| Shielding From | n | Constant | Contribution |
|---|---|---|---|
| 4s,4p (same) | 1 | 0.35 | 0.35 |
| 1s | 2 | 1 | 2.00 |
| 2s,2p | 8 | 1 | 8.00 |
| 3s,3p | 8 | 0.85 | 6.80 |
| 3d | 6 | 1 | 6.00 |
Ο
23.15
Z - Ο
26 - 23.15
Zeff
2.85
Slater's Rules
- Group orbitals: (1s)(2s,2p)(3s,3p)(3d)(4s,4p)(4d)(4f)...
- Electrons in higher groups contribute 0
- Same group: 0.35 (0.30 for 1s)
- For s,p: (n-1) group gives 0.85; lower gives 1.00
- For d,f: all lower electrons give 1.00