Isotopes of darmstadtium

Darmstadtium (Ds) has no stable isotopes. A standard atomic mass cannot be given.

Darmstadtium has also been called hahnium, eka-platinum, and, jokingly, policium.

Table

nuclide symbol	Z(p)	N(n)	isotopic mass (u)	half-life	nuclear spin	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)
nuclide symbol	excitation energy			half-life	nuclear spin	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)
²⁶⁷Ds	110	157	267.14434(39)#	3(+6-2) µs	9/2+#
²⁶⁸Ds	110	158	268.14380(54)#	100# µs	0+
²⁶⁹Ds	110	159	269.14512(15)#	230(110) µs [179(+245-66) µs]	3/2+#
²⁷⁰Ds	110	160	270.14472(31)#	160(100) µs [0.10(+14-4) ms]	0+
^270mDs	1140(70) keV			10(6) ms [6.0(+82-22) ms]	(10)(-#)
²⁷¹Ds	110	161	271.14606(11)#	210(170) ms	11/2-#
^271mDs	29(29) keV			1.3(5) ms	9/2+#
²⁷²Ds	110	162	272.14632(70)#	1# s	0+
²⁷³Ds	110	163	273.14886(14)#	0.17(+17-6) ms	13/2-#
^273m1Ds	198(20) keV			120 ms	3/2+#
^273m2Ds	290(40) keV
²⁷⁴Ds	110	164	274.14949(53)#	2# s	0+
²⁷⁵Ds	110	165	275.15218(48)#	2# s
²⁷⁶Ds	110	166	276.15303(65)#	5# s	0+
²⁷⁷Ds	110	167	277.15565(104)#	5# s	11/2+#
²⁷⁸Ds	110	168	278.15647(73)#	10# s	0+
²⁷⁹Ds	110	169	279.15886(80)#	0.18(+5-3) s
²⁸⁰Ds	110	170	280.15980(91)#	11(6) s	0+
²⁸¹Ds	110	171	281.16206(78)#	9.6 s	3/2+#

Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.

Isotopes of meitnerium	Isotopes of darmstadtium	Isotopes of roentgenium
Index to isotope pages

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