ISOTOPES OF DARMSTADTIUM

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

Contents

Table

Notes

References

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)
	excitation energy
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+#

Notes

★ 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.

References

★ 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.