Group 4 element

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Group 4
Period
4 22
Ti
5 40
Zr
6 72
Hf
7 104
Rf
A Group 4 element is the series of elements in group 4 (IUPAC style) in the periodic table, which consists of titanium (Ti), zirconium (Zr), hafnium (Hf) and rutherfordium (Rf).

All of these elements are classed in Group 4 because their valence shell holds four electrons. Rutherfordium can only be produced in the laboratory and has not been found in nature.

>Explanation of right-hand periodic table slice: Transition metals

atomic number in black are solids
solid borders are older than the Earth (Primordial elements) dotted borders are made artificially (Synthetic elements)

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Periodic tables
Standard table \| Vertical table \| Table with names \| Names and atomic masses (large) \| Names and atomic masses (small) \| Names and atomic masses (text only) \| Inline F-block \| Elements to 218 \| Electron configurations \| Metals and nonmetals \| Table by blocks
Lists of elements
Name \| Atomic symbol \| Atomic number \| Boiling point \| Melting point \| Density \| Atomic mass
Groups: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
Periods: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9
Series: Alkalis - Alkaline earths - Lanthanides - Actinides - Transition metals - Poor metals - Metalloids - Nonmetals - Halogens - Noble gases
Blocks: s-block - p-block - d-block - f-block - g-block

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>Explanation of right-hand periodic table slice:	Transition metals	atomic number in black are solids
		solid borders are older than the Earth (Primordial elements)	dotted borders are made artificially (Synthetic elements)