Group 4 of the Periodic Table
Group 4 of the periodic table has 4 elements: Titanium, Zirconium, Hafnium and Rutherfordium. Elements in a group have a similar last electron shell; the outer-shell pattern of all of them is ns², so they show similar chemical properties. Moving down a group, the number of shells and the atomic radius usually increase.
Element list
| Atomic no. | Symbol | Name | Atomic mass | Phase | Short configuration |
|---|---|---|---|---|---|
| 22 | Ti | Titanium | 47.867 | Solid | [Ar] 3d² 4s² |
| 40 | Zr | Zirconium | 91.224 | Solid | [Kr] 4d² 5s² |
| 72 | Hf | Hafnium | 178.49 | Solid | [Xe] 4f¹⁴ 5d² 6s² |
| 104 | Rf | Rutherfordium | 267 | Solid (a theoretical prediction) | [Rn] 5f¹⁴ 6d² 7s² |
Frequently asked questions
What are the group 4 elements of the periodic table?
The group 4 elements are Titanium (Ti), Zirconium (Zr), Hafnium (Hf) and Rutherfordium (Rf).
How many elements are in group 4?
Group 4 of the periodic table has 4 elements (excluding the lanthanides and actinides).