Template:Infobox astatine

	child table, as reused in {IB-At} v; e; h;
Main isotopes of astatine
α10%	203Bi
α0.55%	204Bi
α3.9%	205Bi
α0.175%	206Bi
α41.8%	207Bi

Astatine, ₈₅At
	File:Glow from a sample of astatine (cropped).jpg
Astatine
Pronunciation	/ˈæstətiːn, -tɪn/ Audio file "LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-astatine.wav" not found (AS-tə-teen, -⁠tin)
Appearance	unknown, probably metallic
Mass number	[210]
Astatine in the periodic table
Atomic number (Z)	85
Group	group 17 (halogens)
Period	period 6
Block	p-block
Electron configuration	[Xe] 4f14 5d10 6s2 6p5
Electrons per shell	2, 8, 18, 32, 18, 7
Physical properties
Phase at STP	solid (predicted)
Density (near r.t.)	8.91–8.95 g/cm3 (estimated)
Molar volume	23.6 cm3/mol (estimated)
Atomic properties
Oxidation states	common: −1, +1; +3, +5, +7
Ionization energies	1st: 899.003 kJ/mol ; ;
Other properties
Natural occurrence	from decay
Crystal structure	face-centered cubic (fcc) Face-centered cubic crystal structure for astatine; (predicted)
CAS Number	7440-68-8
History
Naming	Ancient Greek ástatos (ἄστατος) 'unstable'
Discovery	Dale R. Corson, Kenneth Ross MacKenzie, Emilio Segrè (1940)
Isotopes of astatine v; e;
α10%	203Bi
α0.55%	204Bi
α3.9%	205Bi
α0.175%	206Bi
α41.8%	207Bi
	File:Symbol category class.svg Category: Astatine; view; talk; edit; \| references

At · Astatine
Po ← ibox Po	^iso ₈₅At [e] IB-At [e] IBisos [e]	→ Rn ibox Rn
File:Symbol category class.svg cat:At (1) File:Symbol category class.svg cat:At-isotopes (0) File:Commons-logo.svg Commons File:Wikidata-logo.svg Wikidata:Q999 File:Wiktionary-logo.svg Wiktionary
indexes by PT (page) v e

Data sets read by {{Infobox element}}
Name and identifiers	view edit
Symbol etymology (11 non-trivial)	view edit
Top image (caption, alt)	caption: view edit alt: view edit
Pronunciation	view edit
Allotropes (overview)	view edit
Group (overview)	view edit
Period (overview)	view edit
Block (overview)	view edit
Natural occurrence	view edit
Phase at STP	view edit
Oxidation states	view edit
Spectral lines image	view edit
Electron configuration (cmt, ref)	view edit
Isotopes
Standard atomic weight	view edit
most stable isotope	view edit
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *	view edit
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (0) · (this table: v )

References

↑ ^1.0 ^1.1 Arblaster, JW, ed. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. p. 604. ISBN 978-1-62708-154-2.
↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 28. doi:10.1016/C2009-0-30414-6. ISBN 978-0-08-037941-8.
↑ Rothe, S.; Andreyev, A. N.; Antalic, S.; Borschevsky, A.; Capponi, L.; Cocolios, T. E.; De Witte, H.; Eliav, E.; et al. (2013). "Measurement of the First Ionization Potential of Astatine by Laser Ionization Spectroscopy". Nature Communications. 4: 1–6. Bibcode:2013NatCo...4.1835R. doi:10.1038/ncomms2819. PMC 3674244. PMID 23673620.
↑ Hermann, A.; Hoffmann, R.; Ashcroft, N. W. (2013). "Condensed Astatine: Monatomic and Metallic". Physical Review Letters. 111 (11): 116404-1 – 116404-5. Bibcode:2013PhRvL.111k6404H. doi:10.1103/PhysRevLett.111.116404. PMID 24074111.
↑ ^5.0 ^5.1 Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3) 030001. doi:10.1088/1674-1137/abddae.