|doi=10.1103/PhysRevLett.111.116404|title=Condensed Astatine: Monatomic and Metallic|year=2013|last1=Hermann|first1=A.|last2=Hoffmann|first2=R.|last3=Ashcroft|first3=N. W.|journal=Physical Review Letters|volume=111|issue=11|pages=116404-1–116404-5|bibcode=2013PhRvL.111k6404H|pmid=24074111}} although its extreme radioactivity means that this has never been tested experimentally.
| class="wikitable sortable"
! Z
! Element
! p, Mbar
! ref.
! type |
| 1
| Hydrogen
| {{sort|3.9|3.9}}
| [{{cite journal|doi=10.1103/PhysRevLett.114.105305|title=Molecular to Atomic Phase Transition in Hydrogen under High Pressure|year=2015|last1=McMinis|first1=Jeremy|last2=Clay|first2=Raymond C.|last3=Lee|first3=Donghwa|last4=Morales|first4=Miguel A.|journal=Physical Review Letters|volume=114|issue=10|page=105305|pmid=25815944|bibcode=2015PhRvL.114j5305M|doi-access=free}}]
| theoretical |
| 2
| Helium
| {{sort|329|329}}
| [{{cite journal|doi=10.1103/PhysRevLett.112.055504|title=Electron-Phonon Coupling and the Metallization of Solid Helium at Terapascal Pressures|year=2014|last1=Monserrat|first1=Bartomeu|last2=Drummond|first2=N. D.|last3=Pickard|first3=Chris J.|last4=Needs|first4=R. J.|journal=Physical Review Letters|volume=112|issue=5|page=055504|pmid=24580611|arxiv=1311.1005|bibcode=2014PhRvL.112e5504M|s2cid=29848984}}]
| theoretical |
| 5
| Boron
| {{sort|1.6|1.6}}
| [{{cite journal |last1=Eremets |first1=M. I. |last2=Struzhkin |first2=V. V. |first3=H. |last3=Mao |first4=R. J. |last4=Hemley |date=2001 |title=Superconductivity in boron |url= |journal=Science |volume=293 |issue=5528 |pages=272–274 |doi=10.1126/science.1062286 |access-date=}}][{{cite journal|doi=10.1103/PhysRevB.66.092101|title=Pressure-induced metallization in solid boron|year=2002|last1=Zhao|first1=Jijun|last2=Lu|first2=Jian Ping|journal=Physical Review B|volume=66|issue=9|page=092101|arxiv=cond-mat/0109550|bibcode=2002PhRvB..66i2101Z|s2cid=119426107}}]
| experimental |
| 6
| Carbon
| {{sort|11|11}}
| [{{cite journal|doi=10.1073/pnas.0510489103|year=2006|first1=Alfredo A.|last1=Correa|first2=Stanimir A.|last2=Bonev|first3=Giulia|last3=Galli|title=Carbon under extreme conditions: phase boundaries and electronic properties from first-principles theory|volume=103|issue=5|pages=1204–1208|issn=0027-8424|pmid=16432191|pmc=1345714|journal=Proceedings of the National Academy of Sciences of the United States of America|bibcode=2006PNAS..103.1204C|doi-access=free }}]
| theoretical |
| 7
| Nitrogen
| {{sort|5|>> 5}}
| [{{cite journal|doi=10.1103/PhysRevLett.102.065501|title=Novel High Pressure Structures of Polymeric Nitrogen|year=2009|last1=Ma|first1=Yanming|last2=Oganov|first2=Artem R.|last3=Li|first3=Zhenwei|last4=Xie|first4=Yu|last5=Kotakoski|first5=Jani|journal=Physical Review Letters|volume=102|issue=6|pages=065501|pmid=19257600|bibcode=2009PhRvL.102f5501M}}]
| theoretical |
| 8
| Oxygen
| {{sort|0.960|0.96}}
| [{{cite journal]
| last1 = Akahama
| first1 = Yuichi
|first2=Haruki |last2=Kawamura |first3=Daniel |last3=Häusermann |first4=Michael |last4=Hanfland |first5=Osamu |last5=Shimomura
|date=June 1995
| title = New High-Pressure Structural Transition of Oxygen at 96 GPa Associated with Metallization in a Molecular Solid
| journal = Physical Review Letters
| volume = 74
| issue = 23
| pages = 4690–4694
| doi = 10.1103/PhysRevLett.74.4690
| pmid=10058574
| bibcode=1995PhRvL..74.4690A}}[{{cite journal|doi=10.1039/C9CP05267D|title=Stability and metallization of solid oxygen at high pressure|year=2020|last1=Elatresh|first1=Sabri F.|last2=Bonev|first2=Stanimir A.|journal=Physical Chemistry Chemical Physics|volume=22|issue=22|pages=12577–12583|pmid=32452471|bibcode=2020PCCP...2212577E|osti=1860780 |s2cid=218891958 }}]
| experimental |
| 9
| Fluorine
| {{sort|25|25}}
| [{{cite journal |last1=Olson |first1=Mark A. |last2=Bhatia |first2=Shefali |last3=Larson |first3=Paul |last4=Militzer |first4=Burkhard |date=2020 |title=Prediction of chlorine and fluorine crystal structures at high pressure using symmetry driven structure search with geometric constraints |url=https://aip.scitation.org/doi/full/10.1063/5.0018402 |journal=The Journal of Chemical Physics |volume=153 |issue=9 |page=094111 |doi=10.1063/5.0018402 |pmid=32891084 |arxiv=2008.04471 |s2cid=221095681 |access-date=13 December 2022}}]
| theoretical |
| 10
| Neon
| {{sort|2084|2084}}
| [{{cite journal|doi=10.1063/1.5089489|title=Metallization and positive pressure dependency of bandgap in solid neon|year=2019|last1=Tang|first1=Jun|last2=Ao|first2=Bingyun|last3=Huang|first3=Li|last4=Ye|first4=Xiaoqiu|last5=Gu|first5=Yunjun|last6=Chen|first6=Qifeng|journal=The Journal of Chemical Physics|volume=150|issue=11|page=111103|pmid=30901987|bibcode=2019JChPh.150k1103T|doi-access=free}}]
| theoretical |
| 14
| Silicon
| {{sort|0.120|0.12}}
| [{{cite journal|last1=Hu|first1=Jing Zhu|last2=Merkle|first2=Larry D.|last3=Menoni|first3=Carmen S.|author-link3=Carmen Menoni|last4=Spain|first4=Ian L.|year=1986|title=Crystal data for high-pressure phases of silicon|journal=Physical Review B|volume=34|issue=7|pages=4679–4684|bibcode=1986PhRvB..34.4679H|doi=10.1103/PhysRevB.34.4679|pmid=9940261|hdl=10217/634|hdl-access=free}}]
| experimental |
| 15
| Phosphorus
| {{sort|0.048|0.048}}
| [{{cite journal|doi=10.1143/JJAP.23.15|title=Electrical Investigation of Phase Transition in Black Phosphorus under High Pressure|year=1984|last1=Okajima|first1=Michio|last2=Endo|first2=Shoichi|last3=Akahama|first3=Yuichi|last4=Narita|first4=Shin-ichiro|journal=Japanese Journal of Applied Physics|volume=23|issue=1|pages=15–19|bibcode=1984JaJAP..23...15O|s2cid=121615032 }}]
| experimental |
| 16
| Sulfur
| {{sort|0.830|0.83}}
| [{{cite journal|doi=10.1103/PhysRevB.48.6862|title=Pressure-induced structural phase transition in sulfur at 83 GPa|year=1993|last1=Akahama|first1=Y.|last2=Kobayashi|first2=M.|last3=Kawamura|first3=H.|journal=Physical Review B|volume=48|issue=10|pages=6862–6864|pmid=10006849|bibcode=1993PhRvB..48.6862A}}]
| experimental |
| 17
| Chlorine
| {{sort|2.0|2.0}}
| [{{cite journal |last1=Dalladay-Simpson |first1=Philip |last2=Binns |first2=Jack |last3=Peña-Alvarez |first3=Miriam |last4=Donnelly |first4=Mary-Ellen |last5=Greenberg |first5=Eran |last6=Prakapenka |first6=Vitali |last7=Chen |first7=Xiao-Jia |last8=Gregoryanz |first8=Eugene |last9=Howie |first9=Ross T. |title=Band gap closure, incommensurability and molecular dissociation of dense chlorine |journal=Nature Communications |date=8 March 2019 |volume=10 |issue=1 |page=1134 |doi=10.1038/s41467-019-09108-x |pmid=30850606 |pmc=6408506 |bibcode=2019NatCo..10.1134D |language=en |issn=2041-1723|doi-access=free }}]
| experimental |
| 18
| Argon
| {{sort|5.1|5.1}}
| [{{cite journal |doi=10.1103/PhysRevB.52.15165|title=First-principles study of solid Ar and Kr under high compression|first1=I.|last1=Kwon|first2=L.A.|last2=Collins|first3=J.D.|last3=Kress|first4=N.|last4=Troullier|journal=Physical Review B|volume=52|issue=21|pages=15165–15169|year=1995|pmid=9980870|bibcode=1995PhRvB..5215165K}}]
| theoretical |
| 32
| Germanium
| {{sort|0.110|0.11}}
| [{{cite journal|doi=10.1103/PhysRevLett.56.1944|title=Phase-Transition Studies of Germanium to 1.25 Mbar|year=1986|last1=Vohra|first1=Yogesh K.|last2=Brister|first2=Keith E.|last3=Desgreniers|first3=Serge|last4=Ruoff|first4=Arthur L.|last5=Chang|first5=K. J.|last6=Cohen|first6=Marvin L.|journal=Physical Review Letters|volume=56|issue=18|pages=1944–1947|pmid=10032817|bibcode=1986PhRvL..56.1944V}}]
| experimental |
| 33
| Arsenic
| {{sort|0.022|0.022}}
| [{{cite journal|doi=10.1088/1361-648X/ab3f76|title=Pressure-induced metallization of black arsenic|year=2019|last1=Li|first1=Ruiping|last2=Han|first2=Nannan|last3=Cheng|first3=Yingchun|last4=Huang|first4=Wei|journal=Journal of Physics: Condensed Matter|volume=31|issue=50|pages=505501|pmid=31469104|bibcode=2019JPCM...31X5501L|s2cid=201673605 }}]
| theoretical |
| 34
| Selenium
| {{sort|0.230|0.23}}
| [{{cite journal|doi=10.1103/PhysRevB.47.20|title=Structural studies of pressure-induced phase transitions in selenium up to 150 GPa|year=1993|last1=Akahama|first1=Y.|last2=Kobayashi|first2=M.|last3=Kawamura|first3=H.|journal=Physical Review B|volume=47|issue=1|pages=20–26|pmid=10004412|bibcode=1993PhRvB..47...20A}}]
| experimental |
| 35
| Bromine
| {{sort|0.250|0.25}}
| [{{cite journal|doi=10.1007/s100510070136|title=Bromine metallization studied by X-ray absorption spectroscopy|year=2000|last1=San Miguel|first1=A.|last2=Libotte|first2=H.|last3=Gaspard|first3=J.P.|last4=Gauthier|first4=M.|last5=Itié|first5=J.P.|last6=Polian|first6=A.|journal=The European Physical Journal B|volume=17|issue=2|pages=227–233|bibcode=2000EPJB...17..227S|s2cid=123571031}}]
| experimental |
| 36
| Krypton
| {{sort|3.1|3.1}}
| [{{cite journal|doi=10.1016/0375-9601(89)90503-3|title=Equation of state and metallization in compressed solid krypton|year=1989|last1=Hama|first1=Juichiro|last2=Suito|first2=Kaichi|journal=Physics Letters A|volume=140|issue=3|pages=117–121|bibcode=1989PhLA..140..117H}}]
| theoretical |
| 52
| Tellurium
| {{sort|0.040|0.04}}
| [{{cite journal|doi=10.1103/PhysRevB.86.064103|title=High-pressure phases of crystalline tellurium: A combined Raman and ab initio study|first1=C.|last1=Marini|first2=D.|last2=Chermisi|first3=M.|last3=Lavagnini|first4=D.|last4=Di Castro|first5=C.|last5=Petrillo|first6=L.|last6=Degiorgi|first7=S.|last7=Scandolo|first8=P.|last8=Postorino|journal=Physical Review B|volume=86|issue=6|year=2012|page=064103|bibcode=2012PhRvB..86f4103M}}]
| experimental |
| 53
| Iodine
| {{sort|0.160|0.16}}
| [{{cite journal|doi=10.1103/physrevlett.58.575|title=Metallization and structural transformation of iodine under pressure: A microscopic view|year=1987|last1=Pasternak|first1=M.|last2=Farrell|first2=J. N.|last3=Taylor|first3=R. D.|journal=Physical Review Letters|volume=58|issue=6|pages=575–578|pmid=10034976|bibcode=1987PhRvL..58..575P}}]
| experimental |
| 54
| Xenon
| {{sort|1.3|1.3}}
| [{{cite journal|doi=10.1103/PhysRevLett.85.2797|title=Electrical Conductivity of Xenon at Megabar Pressures|year=2000|last1=Eremets|first1=Mikhail|last2=Gregoryanz|first2=Eugene|last3=Struzhkin|first3=Victor|last4=Mao|first4=Ho-Kwang|last5=Hemley|first5=Russell|last6=Mulders|first6=Norbert|last7=Zimmerman|first7=Neil|journal=Physical Review Letters|volume=85|issue=13|pages=2797–2800|pmid=10991236|bibcode=2000PhRvL..85.2797E}}]
| experimental |
| 86
| Radon
| {{sort|0|.}}
| .
| . |