WebElements Periodic Table of the Elements | Darmstadtium

Darmstadtium: the essentials

Darmstadtium, is a synthetic element that is not present in the environment at all. Further information on element 110 is here (outside WebElements) and in a press release (outside WebElements). The interested reader should consult the on-line version of The Wonderful World of Atoms and Nuclei for a fascinating insight into research on "super-heavy" atoms.

Chemically, darmstadtium is in the same Group as nickel, palladium, and platinum (Group 10). Unlike these lighter atoms, darmstadtium decays after a small fraction of a thousandth of a second into lighter elements by emitting α-particles which are the nuclei of helium atoms.

Table: basic information about and classifications of darmstadtium.
Name: Darmstadtium Symbol: Ds Atomic number: 110 Atomic weight: [ 281 ] Standard state: presumably a solid at 298 K CAS Registry ID: 54083-77-1	Group in periodic table: 10 Group name: (none) Period in periodic table: 7 Block in periodic table: d-block Colour: unknown, but probably metallic and silvery white or grey in appearance Classification: Metallic

Darmstadtium: historical information

Darmstadtium was discovered by S. Hofmann, V. Ninov, F. P. Hessberger, P. Armbruster, H. Folger, G. Münzenberg, H. J. Schött, and others at 1994 in Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany.. Origin of name: the name darmstadtium lies within the long established tradition of naming an element after the place of its discovery, Darmstadt, in Germany..

On the 9th of November 1994 at 4:39 pm the first atom of element 110, darmstadtium, was detected at the Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany. The isotope discovered has an atomic number of 269 (that is, 269 times heavier than hydrogen).

The new element was produced by fusing a nickel and a lead atom together. This was achieved by accelerating the nickel atoms to a high energy in the heavy ion accelerator UNILAC at GSI. Over a period of many days, many billion billion nickel atoms were fired at a lead target in order to produce and identify a single atom of darmstadtium.

Darmstadtium was the fourth element discovered at GSI. Between 1981 and 1984 the elements 107 (bohrium), 108 (hassium), 109 (meitnerium) were produced and identified there. Since the discovery of darmstadtium, elements 111 and 112 were both discovered at GSI.

Darmstadtium: physical properties

Melting point: no data K
Boiling point: no data K
Density of solid: 27400 (predicted) kg m^-3

Ground state electron configuration: [Rn].5f¹⁴.6d⁹.7s¹ (a guess based upon that of platinum)
Shell structure: 2.8.18.32.32.17.1
Term symbol: ³D₃ (a guess based upon guessed electronic structure)
Pauling electronegativity: no data (Pauling units)
First ionisation energy: no data kJ mol^-1
Second ionisation energy: no data kJ mol^-1

Isolation

Isolation: only a few atoms of darmstadtium have ever been made, initially through a nuclear reaction involving fusion of an isotope of lead, Pb, with one of nickel, Ni.

²⁰⁸Pb + ⁶²Ni → ²⁶⁹Ds + ¹n

Isolation of an observable quantity has never been achieved, and may well never be. This is because atoms of the element decompose through the emission of α-particles with a half life of only about 270 microseconds. Another isotope was made by using a different isotope of nickel.

²⁰⁸Pb + ⁶⁴Ni → ²⁷¹Ds + ¹n

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Ir	Pt	Au
Mt	Ds	Rg

Darmstadtium	Darmstadtium
Darmstadtium	Darmstadtium
Roentgenio	Darmstadtio
Darmstadtium	Darmstadtio

Darmstadtium
- Essential data: names, symbol, atomic number, and atomic weight; block, period, and group in periodic table; description; standard state; registry number; and isolation
- History: meaning of name; discovery; and history of the element
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Darmstadtium around us
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1 H																															2 He
3 Li	4 Be																									5 B	6 C	7 N	8 O	9 F	10 Ne
11 Na	12 Mg																									13 Al	14 Si	15 P	16 S	17 Cl	18 Ar
19 K	20 Ca															21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn	31 Ga	32 Ge	33 As	34 Se	35 Br	36 Kr
37 Rb	38 Sr															39 Y	40 Zr	41 Nb	42 Mo	43 Tc	44 Ru	45 Rh	46 Pd	47 Ag	48 Cd	49 In	50 Sn	51 Sb	52 Te	53 I	54 Xe
55 Cs	56 Ba	57 La	58 Ce	59 Pr	60 Nd	61 Pm	62 Sm	63 Eu	64 Gd	65 Tb	66 Dy	67 Ho	68 Er	69 Tm	70 Yb	71 Lu	72 Hf	73 Ta	74 W	75 Re	76 Os	77 Ir	78 Pt	79 Au	80 Hg	81 Tl	82 Pb	83 Bi	84 Po	85 At	86 Rn
87 Fr	88 Ra	89 Ac	90 Th	91 Pa	92 U	93 Np	94 Pu	95 Am	96 Cm	97 Bk	98 Cf	99 Es	100 Fm	101 Md	102 No	103 Lr	104 Rf	105 Db	106 Sg	107 Bh	108 Hs	109 Mt	110 Ds	111 Rg	112 Cn	113 Uut	114 Fl	115 Uup	116 Lv	117 Uus	118 Uuo

Darmstadtium

Darmstadtium: the essentials

Darmstadtium: historical information

Darmstadtium: physical properties

Darmstadtium: orbital properties

Isolation

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