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Group 4 element
Group 4
in the periodic table
group 3
←
→
group 5
IUPAC group number
4
Name by element
titanium group
CAS group number
(US, pattern A-B-A)
IVB
old IUPAC number
(Europe, pattern A-B)
IVA
↓
Period
4
Titanium
(Ti)
22
Transition metal
5
Zirconium
(Zr)
40
Transition metal
6
Hafnium
(Hf)
72
Transition metal
7
Rutherfordium
(Rf)
104
Transition metal
Legend
primordial element
synthetic element
Atomic number color:
black=solid
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