hafnium

chemical element with symbol Hf and atomic number 72
Thing chemical_element Q1119
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hafnium

Summary

hafnium is a chemical element[1]. hafnium draws 39 Wikipedia views per month (chemical_element category, ranking #67 of 144).[2]

Key Facts

  • hafnium is credited with the discovery of George de Hevesy[3].
  • hafnium is credited with the discovery of Dirk Coster[4].
  • hafnium's instance of is recorded as chemical element[5].
  • hafnium's instance of is recorded as combustible powder[6].
  • hafnium's instance of is recorded as lithophile[7].
  • Copenhagen is named after hafnium[8].
  • hafnium's location of discovery is recorded as Denmark[9].
  • hafnium's canonical SMILES is recorded as [Hf][10].
  • hafnium's element symbol is recorded as Hf[11].
  • hafnium's chemical formula is recorded as Hf[12].
  • hafnium is a type of d-block[13].
  • hafnium is part of period 6[14].
  • hafnium is part of group 4[15].
  • hafnium is part of transition metal[16].
  • hafnium's Commons category is recorded as Hafnium[17].
  • hafnium's Unicode character is recorded as 鉿[18].
  • hafnium's crystal system is recorded as hexagonal crystal system[19].
  • hafnium's time of discovery or invention is recorded as 1922[20].
  • hafnium's point group is recorded as dihexagonal-dipyramidal[21].
  • hafnium's space group is recorded as space group P6₃/mmc[22].
  • hafnium's IPA transcription is recorded as ˈhæfniəm[23].
  • hafnium's topic's main category is recorded as Category:Hafnium[24].
  • hafnium's Commons gallery is recorded as Hafnium[25].
  • hafnium's atomic number is recorded as {'amount': '+72'}[26].
  • hafnium's Mohs' hardness is recorded as {'amount': '+5.5'}[27].

Body

Definition and Type

Recorded instance of include chemical element[5], combustible powder[6], and lithophile[7]. hafnium is a type of d-block[13].

Origins

Copenhagen is named after hafnium[8].

Use and Application

Part of include period 6[14], a period[28]; group 4[15], a group[29]; and transition metal[16].

Influence

Things named for hafnium include hafnon[30], a mineral species[31].

Why It Matters

hafnium draws 39 Wikipedia views per month (chemical_element category, ranking #67 of 144).[2] hafnium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[32] hafnium is known by 60 alternative names across languages and contexts.[33]

Entities named for hafnium include hafnon[30], a mineral species[31].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [5] ↑ . wikidata.org.
  2. [6] ↑ . cdc.gov. cdc.gov. Provenance: wikidata.org.
  3. [7] ↑ . wikidata.org.
  4. [3] ↑ . wikidata.org.
  5. [4] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . PubChem. Retrieved . wikidata.org.
  9. [11] ↑ . Atomic weights of the elements 2009 (IUPAC Technical Report). wikidata.org.
  10. [12] ↑ . PubChem. Retrieved . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . cns11643.gov.tw. Retrieved . cns11643.gov.tw. Provenance: wikidata.org.
  17. [19] ↑ . crystallography.net. Retrieved . crystallography.net. Provenance: wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . crystallography.net. Retrieved . crystallography.net. Provenance: wikidata.org.
  20. [22] ↑ . crystallography.net. Retrieved . crystallography.net. Provenance: wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . Retrieved . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [30] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [28] ↑ . Wikidata. wikidata.org. → on this site
  2. [29] ↑ . Wikidata. wikidata.org. → on this site
  3. [31] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [32] ↑ . Wikidata sitelinks. wikidata.org.
  3. [33] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). hafnium. Retrieved October 4, 2026, from https://4ort.xyz/entity/hafnium
MLA “hafnium.” 4ort.xyz Knowledge Graph, 4ort.xyz, 4 Oct. 2026, https://4ort.xyz/entity/hafnium.
BibTeX @misc{4ortxyz_hafnium_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{hafnium}}, year = {2026}, url = {https://4ort.xyz/entity/hafnium}, note = {Accessed: 2026-10-04}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): hafnium — https://4ort.xyz/entity/hafnium (retrieved 2026-10-04)

Canonical URL: https://4ort.xyz/entity/hafnium · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 1d ago · R1F4T · 2026-10-03 view diff on Wikidata ↗
    P14936 → {'unit': 'Q192274', 'amount': '+155'}
    Sitelink count → 146
    Wikipedia languages → ['af', 'am', 'an', 'anp', 'ar', 'ary', 'arz', 'ast', 'avk', 'az', 'ba', 'ban', '
    P14937 → {'unit': 'Q192274', 'amount': '+175'}
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P14936]]: 155 picometre, Add sourced P14936 element radius"
  2. 8d ago · KrBot bot · 2026-09-26 view diff on Wikidata ↗
    Zvg number → 7720
    "/* wbsetclaimvalue:1| */ [[Property:P679]]: 7720, см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P679]]"
  3. 11d ago · Mrwdat3 · 2026-09-23 view diff on Wikidata ↗
    Oxidation state → {'amount': '+4'}, {'amount': '-2'}, {'amount': '+0'} +3
    Zvg number → 7720
    "/* wbcreateclaim-create:1| */ [[Property:P679]]: 007720, [[:toollabs:quickstatements/#/batch/275042|batch #275042]]"
  4. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Oxidation state → {'amount': '+4'}, {'amount': '-2'}, {'amount': '+0'} +3
    "/* wbsetclaim-create:2||1 */ [[Property:P1121]]: −2, add oxidation state from en:Template:Infobox element/symbol-to-oxidation-state"
  5. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Ipa transcription → ˈhæfniəm
    "/* wbsetclaim-create:2||1 */ [[Property:P898]]: ˈhæfniəm, add IPA transcription (from en:Template:Infobox element/symbol-to-pronunciation)"
  6. 15d ago · R1F4T · 2026-09-19 view diff on Wikidata ↗
    Pronunciation audio → LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-haf
    "/* wbsetclaim-create:2||1 */ [[Property:P443]]: LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-hafnium.wav, add English pronunciation audio (Lingua Libre, from en:Template:Infobox element/sy"
  7. 16d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Subclass of → d-block
    "/* wbsetclaim-create:2||1 */ [[Property:P279]]: [[Q214503]], add periodic table block (IUPAC 2021 convention)"
  8. 16d ago · R1F4T · 2026-09-18 view diff on Wikidata ↗
    Ionization energy → {'unit': 'Q83327', 'amount': '+6.82507'}, {'unit': 'Q83327', 'amount': '+14.61'}, {'unit': 'Q83327', 'amount': '+22.55'}
    "/* wbeditentity-statements-single-property-add:1||3 */ [[Property:P2260]], import ionization energy from NIST Atomic Spectra Database"
  9. 28d ago · KrBot bot · 2026-09-06 view diff on Wikidata ↗
    Mohs' hardness → {'amount': '+5.5'}
    Standard molar entropy → {'unit': 'Q20966455', 'amount': '+186.9'}, {'unit': 'Q20966455', 'amount': '+71.94'}
    Has characteristic → paramagnetism
    Standard enthalpy of formation → {'unit': 'Q752197', 'amount': '+618.4'}, {'unit': 'Q752197', 'amount': '+46.21'}
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbsetreference-set:2| */ [[Property:P1552]]: [[Q188479]], см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P356]]"
  10. 29d ago · Baum64 · 2026-09-05 view diff on Wikidata ↗
    Point group → dihexagonal-dipyramidal
    "/* wbcreateclaim-create:1| */ [[Property:P589]]: [[Q13362368]], [[:toollabs:quickstatements/#/batch/270882|batch #270882]]"
  11. 5w ago · Baum64 · 2026-08-30 view diff on Wikidata ↗
    Subclass of → d-block
    Part of → period 6, group 4, transition metal
    "/* wbremoveclaims-remove:1| */ [[Property:P279]]: [[Q19588]], [[:toollabs:quickstatements/#/batch/269683|batch #269683]]"
  12. 5w ago · Mahirtwofivesix · 2026-08-26 view diff on Wikidata ↗
    Babelnet id → 00006904n
    Interlingual index id → i113942
    Arabic ontology lexical concept id → 151078471
    "/* wbeditentity-statements-multiple-properties-update:0||4 */ added/modified IDs mapped to WordNet 3.1"
  13. 7w ago · Baum64 · 2026-08-16 view diff on Wikidata ↗
    Electrical conductivity → {'unit': 'Q80842107', 'amount': '+3120000.0'}
    Poisson's ratio → {'amount': '+0.277'}
    Specific heat capacity → {'unit': 'Q3085309', 'amount': '+140.0'}
    Electrical resistivity → {'unit': 'Q1441459', 'amount': '+0.000000331'}
    + 7 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ [[Property:P9824]]: 1539053, [[:toollabs:quickstatements/#/batch/269026|batch #269026]]"
  14. 12w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 4Dirbq
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
  15. 14w ago · Ginta Pankoka · 2026-06-26 view diff on Wikidata ↗
    National library of latvia id → 000371737
    "/* wbsetclaim-create:2||1 */ [[Property:P1368]]: 000371737"
  16. 20w ago · Ponor · 2026-05-16 view diff on Wikidata ↗
    Hrvatska enciklopedija id → hafnij
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/31836|batch #31836]]: Hrvatska enciklopedija"
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