Template:Infobox berkelium

	child table, as reused in {IB-Bk} v; e; h;
Main isotopes of berkelium
α	241Am
β+	246Cm
α	245Am
SF	–

Berkelium, ₉₇Bk
Berkelium
Pronunciation	/bərˈkiːliəm/; (bər-KEE-lee-əm); /ˈbɜːrkliəm/; (BUR-klee-əm);
Appearance	silvery
Mass number	[247]
Berkelium in the periodic table
	curium ← berkelium → californium
Atomic number (Z)	97
Group	f-block groups (no number)
Period	period 7
Block	f-block
Electron configuration	[Rn] 5f9 7s2
Electrons per shell	2, 8, 18, 32, 27, 8, 2
Physical properties
Phase at STP	solid
Melting point	beta: 1259 K (986 °C, 1807 °F)
Boiling point	beta: 2900 K (2627 °C, 4760 °F)
Density (near r.t.)	alpha: 14.78 g/cm3 ; beta: 13.25 g/cm3
Heat of fusion	7.92 kJ/mol (calculated)
Atomic properties
Oxidation states	+2, +3, +4, +5
Electronegativity	Pauling scale: 1.3
Ionization energies	1st: 601 kJ/mol ; ;
Atomic radius	empirical: 170 pm
	Spectral lines of berkelium
Other properties
Natural occurrence	synthetic
Crystal structure	double hexagonal close-packed (dhcp)
Thermal conductivity	10 W/(m⋅K)
Magnetic ordering	paramagnetic
CAS Number	7440-40-6
History
Naming	after Berkeley, California, where it was discovered
Discovery	Lawrence Berkeley National Laboratory (1949)
Isotopes of berkelium v; e;
α	241Am
β+	246Cm
α	245Am
SF	–
	Category: Berkelium; view; talk; edit; \| references

Bk · Berkelium
Cm ← ibox Cm	^iso ₉₇Bk [e] IB-Bk [e] IBisos [e]	→ Cf ibox Cf
cat:Bk (3) cat:Bk-isotopes (23) Commons Wikidata:Q1882 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)	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
Wikidata
Wikidata *	view edit
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (12) · (this table: v )

References

^ Kovács, Attila; Dau, Phuong D.; Marçalo, Joaquim; Gibson, John K. (2018). "Pentavalent Curium, Berkelium, and Californium in Nitrate Complexes: Extending Actinide Chemistry and Oxidation States". Inorg. Chem. 57 (15). American Chemical Society: 9453–9467. doi:10.1021/acs.inorgchem.8b01450. OSTI 1631597. PMID 30040397. S2CID 51717837.
^ ^2.0 ^2.1 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.
^ Milsted, J.; Friedman, A. M.; Stevens, C. M. (1965). "The alpha half-life of berkelium-247; a new long-lived isomer of berkelium-248". Nuclear Physics. 71 (2): 299. doi:10.1016/0029-5582(65)90719-4.
^ Milsted, J.; Friedman, A. M.; Stevens, C. M. (1965). "The alpha half-life of berkelium-247; a new long-lived isomer of berkelium-248". Nuclear Physics. 71 (2): 299. doi:10.1016/0029-5582(65)90719-4.

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