| Serial | Properties within Periods and Groups | Variation | |
| Moving left → right | Moving top → bottom | ||
| 1 | Metallic character | decreases | increases |
| 2 | Atomic size or atomic radius | decreases | increases |
| 3 | Ionic radii | decreases | increases |
| 4 | Ionization energy | increases | decreases |
| 5 | Electron affinities | higher | lower |
| 6 | Electro negativities | increases | decreases |
| 7 | Oxidizing power | higher | lower |
| 8 | Reducing power | lower | higher |
