Hafnium
Hafnium
Chemical element with atomic number 72 (Hf).
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Readers' pathsAug 2026 – Oct 2026
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Tantalum
Chemical element with atomic number 73.
18%
Zirconium
Chemical element with atomic number 40.
9.5%
Lutetium
Chemical element with atomic number 71 (Lu).
8%
Mendeleev's predicted elements
Elements predicted but not found in 1869.
3.9%
Copenhagen
Capital and most populous city of Denmark.
3.5%
Periodic table
Tabular arrangement of the chemical elements.
2.9%
Heavy mineral sands ore deposits
Ore deposits of rare earth metals.
2.3%
Dirk Coster
Dutch physicist (1889–1950).
2.2%
Pyrophoricity
Tendency of a chemical compound to ignite in open air.
2.1%
George de Hevesy
Hungarian radiochemist (1885–1966).
2%
Readers come from
Share of the 7,059 readers arriving from another article
Lutetium
Chemical element with atomic number 71 (Lu).
14%
Zirconium
Chemical element with atomic number 40.
12%
Tantalum
Chemical element with atomic number 73.
10%
Periodic table
Tabular arrangement of the chemical elements.
7.8%
Niels Bohr
Danish physicist (1885–1962).
4.1%
Copenhagen
Capital and most populous city of Denmark.
3.7%
Rhenium
Chemical element with atomic number 75 (Re).
3.2%
Zircon
Zirconium silicate mineral.
2.5%
Hafnium(IV) oxide
Chemical compound.
2.3%
George de Hevesy
Hungarian radiochemist (1885–1966).
2.2%