Hassium

Hassium (Hs)

Hassium is the 108th element in the periodic table and has a symbol of Hs and atomic number of 108. It has an atomic weight of (269) and a mass number of 263. Hassium has one hundred eight protons and one hundred fifty-five neutrons in its nucleus, and one hundred eight electrons in seven shells. It is located in group eight, period seven and block d of the periodic table. Radioactive transition metal first synthesized in 1984 by a German research team led by Peter Armbruster and Gottfried Muenzenberg at the Institute for Heavy Ion Research at Darmstadt.
Atomic Number108
Atomic Weight269
Mass Number263
Group8
Period7
Blockd
Protons108 p+
Neutrons155 n0
Electrons108 e-
Animated Bohr Model of Hs (Hassium)

Physical Properties

Atomic Radius
Molar Volume
Covalent Radius
134 pm
Metallic Radius
Ionic Radius
Crystal Radius
Van der Waals Radius
Density
40.7 g/cm³

Chemical Properties

Energy
Proton Affinity
Electron Affinity
Ionization Energy
Ionization Energies of Hs (Hassium)
Heat of Vaporization
Heat of Fusion
Heat of Formation
Electrons
Electron Shells2, 8, 18, 32, 32, 14, 2
Bohr Model: Hs (Hassium)
Valence Electrons2
Lewis Structure: Hs (Hassium)
Electron Configuration[Rn] 5f14 6d6 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f14 6d6 7s2
Enhanced Bohr Model of Hs (Hassium)
Orbital Diagram of Hs (Hassium)
Oxidation States8
Electronegativity
Electrophilicity Index
States of Matter
PhaseSolid
Gas Phase
Boiling Point
Melting Point
Critical Pressure
Critical Temperature
Triple Point
Visual

Hassium is a Colorless. Hs has a Jmol of #e6002e.

Color
Colorless
Appearance
Refractive Index
Thermodynamic Properties
Thermal Conductivity
Thermal Expansion
Molar Heat Capacity
Specific Heat Capacity
Heat Capacity Ratio (Adiabatic Index)
Electrical Properties
Type
Electrical Conductivity
Electrical Resistivity
Superconducting Point
Magnetism
Type
Magnetic Susceptibility (Mass)
Magnetic Susceptibility (Molar)
Magnetic Susceptibility (Volume)
Magnetic Ordering
Curie Point
Neel Point
Structure

The lattice angles of Hassium is .

Crystal Structure ()
Lattice Constant
Lattice Angles
Mechanical Properties
Hardness
Bulk Modulus
Shear Modulus
Young's Modulus
Poisson Ratio
Speed of Sound
Classification

The CAS Group of Hassium is VIIIA. The IUPAC Group of Hs is VIII. The Mendeleev Number of Element 108 is 62. The Goldschmidt Class of Hassium (Hs) is synthetic.

CategoryTransition metals, Transition metals
CAS GroupVIIIA
IUPAC GroupVIII
Glawe Number
Mendeleev Number62
Pettifor Number
Geochemical Class
Goldschmidt Classsynthetic

Other

The Dipole Polarizability of Hassium is 36 plus or minus 4 a₀. The Allotropes of Hs is . The Quantum Numbers of Element 108 is 5D4. The Space Group of Hassium (Hs) is ().

Gas Basicity
Dipole Polarizability
36 ± 4 a₀
C6 Dispersion Coefficient
Allotropes
Neutron Cross Section
Neutron Mass Absorption
Quantum Numbers5D4
Space Group ()

Isotopes of Hassium

Stable Isotopes0
Unstable Isotopes18
Natural Isotopes0

263Hs

Mass Number263
Neutron Number155
Relative Atomic Mass
263.128479 ± 0.000212 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
0.9 ± 0.4 ms
Spin3/2
Quadrupole Moment
Discovery Year2009
Parity+

Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)

264Hs

Mass Number264
Neutron Number156
Relative Atomic Mass
264.12835633 ± 0.000031005 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
0.7 ± 0.3 s
Spin0
Quadrupole Moment
0
Discovery Year1986
Parity+

Decay ModeIntensity
α (α emission)70%
SF (spontaneous fission)30%

265Hs

Mass Number265
Neutron Number157
Relative Atomic Mass
265.129791744 ± 0.000025719 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
1.96 ± 0.16 ms
Spin3/2
Quadrupole Moment
Discovery Year1984
Parity+

Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)

266Hs

Mass Number266
Neutron Number158
Relative Atomic Mass
266.130048783 ± 0.000029099 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
3 ± 0.6 ms
Spin0
Quadrupole Moment
0
Discovery Year2001
Parity+

Decay ModeIntensity
α (α emission)76%
SF (spontaneous fission)24%

267Hs

Mass Number267
Neutron Number159
Relative Atomic Mass
267.131678 ± 0.000102 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
55 ± 11 ms
Spin
Quadrupole Moment
Discovery Year1995
Parity

Decay ModeIntensity
α (α emission)80%
SF (spontaneous fission)

268Hs

Mass Number268
Neutron Number160
Relative Atomic Mass
268.132011 ± 0.000322 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
1.4 ± 1.1 s
Spin0
Quadrupole Moment
0
Discovery Year2010
Parity+

Decay ModeIntensity
α (α emission)100%

269Hs

Mass Number269
Neutron Number161
Relative Atomic Mass
269.133649 ± 0.000141 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
15 ± 7 s
Spin9/2
Quadrupole Moment
Discovery Year1996
Parity+

Decay ModeIntensity
α (α emission)100%

270Hs

Mass Number270
Neutron Number162
Relative Atomic Mass
270.134313 ± 0.000266 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
9 ± 4 s
Spin0
Quadrupole Moment
0
Discovery Year2003
Parity+

Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)

271Hs

Mass Number271
Neutron Number163
Relative Atomic Mass
271.137082 ± 0.000296 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year2008
Parity

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

272Hs

Mass Number272
Neutron Number164
Relative Atomic Mass
272.138492 ± 0.000547 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin0
Quadrupole Moment
0
Discovery Year
Parity+

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

273Hs

Mass Number273
Neutron Number165
Relative Atomic Mass
273.141458 ± 0.000401 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
1,060 ± 500 ms
Spin
Quadrupole Moment
Discovery Year2010
Parity

Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)

274Hs

Mass Number274
Neutron Number166
Relative Atomic Mass
274.143217 ± 0.000504 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin0
Quadrupole Moment
0
Discovery Year
Parity+

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

275Hs

Mass Number275
Neutron Number167
Relative Atomic Mass
275.14653 ± 0.000637 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
280 ± 130 ms
Spin
Quadrupole Moment
Discovery Year2004
Parity

Decay ModeIntensity
α (α emission)100%

276Hs

Mass Number276
Neutron Number168
Relative Atomic Mass
276.148348 ± 0.000773 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin0
Quadrupole Moment
0
Discovery Year
Parity+

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

277Hs

Mass Number277
Neutron Number169
Relative Atomic Mass
277.151772 ± 0.00048 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
12 ± 9 ms
Spin
Quadrupole Moment
Discovery Year2010
Parity

Decay ModeIntensity
SF (spontaneous fission)100%
α (α emission)

278Hs

Mass Number278
Neutron Number170
Relative Atomic Mass
278.153753 ± 0.000322 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin0
Quadrupole Moment
0
Discovery Year2016
Parity+

Decay ModeIntensity
SF (spontaneous fission)100%
α (α emission)

279Hs

Mass Number279
Neutron Number171
Relative Atomic Mass
279.157274 ± 0.000644 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)

280Hs

Mass Number280
Neutron Number172
Relative Atomic Mass
280.159335 ± 0.000644 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin0
Quadrupole Moment
0
Discovery Year
Parity+

Decay ModeIntensity
α (α emission)
SF (spontaneous fission)
Electron shell 108 Hassium

History

Hassium was first synthesized in 1984 by a German research team led by Peter Armbruster and Gottfried Münzenberg at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung) in Darmstadt. The team bombarded a target of lead-208 with accelerated nuclei of iron-58 to produce 3 atoms of the isotope hassium-265. From the Latin word Hassias meaning Hess, the German state

DiscoverersHeavy Ion Research Laboratory (HIRL)
Discovery LocationGermany
Discovery Year1984
Etymology (Name Origin)Named in honor of Henri Hess, Swiss born Russian chemist known for work in thermodydamics.
PronunciationHES-i-em (English)
Hassium is harmful due to its radioactivity
More than 100 atoms of hassium have been synthesized to date

Uses

Hassium is used for scientific research purposes only. It has no significant commercial applications.

Sources

Formed by the bombardment of lead-208 with iron-58.

Abundance
Abundance in Earth's crust
Natural Abundance (Oceans)
Natural Abundance (Human Body)
0 %
Natural Abundance (Meteor)
0 %
Natural Abundance (Sun)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants

Also Known As

  • Hs
  • element 108
  • unniloctium
  • Uno

Translations

  • Norwegian Bokmålhassium
  • Frenchhassium
  • Norwegian Nynorskhassium
  • GermanHassium
  • Spanishhasio
  • Swedishhassium
  • Danishhassium
  • Italianhassio
  • Hungarianhasszium
  • Dutchhassium
  • Amharicሀሲየም
  • Aragonesehassio
  • Arabicهاسيوم
  • Azerbaijanihassium
  • Belarusianхасій
  • Bulgarianхасий
  • Banglaহ্যাসিয়াম
  • Bosnianhasij
  • Catalanhassi
  • Corsicanhassiu
  • Czechhassium
  • ChuvashХасси
  • Welshhasiwm
  • Greekχάσιο
  • Esperantohasio
  • Estonianhassium
  • Basquehassio
  • Persianهاسیم
  • Finnishhassium
  • Friulianhassi
  • Irishhaisiam
  • Galicianhassio
  • Manxhassium
  • Hakka Chinesehassium
  • Hebrewהאסיום
  • Fiji Hindihassium
  • Croatianhasij
  • Haitian Creoleasyòm
  • Armenianհասիում
  • Interlinguahassium
  • Indonesianhasium
  • Idohasio
  • Japaneseハッシウム
  • Lojbanjinmrxasi
  • Javanesehassium
  • Kannadaಹಾಸ್ಸಿಯಮ್
  • Korean하슘
  • Kurdishhasiyûm
  • Komiхассий
  • Latinhassium
  • LuxembourgishHassium
  • Ligurianhassio
  • Lithuanianhasis
  • Latvianhasijs
  • Malayalamഹാസ്സിയം
  • Mongolianхасси
  • Marathiहासियम
  • Western Mariхассий
  • Malayhasium
  • Polishhas
  • Portuguesehássio
  • Quechuahasyu
  • Romanianhassiu
  • Russianхассий
  • Sicilianassiu
  • Serbo-Croatianhasijum
  • Slovakhassium
  • Slovenianhasij
  • Albanianhassiumi
  • Serbianхасијум
  • Saterland Frisianhassium
  • Tamilஆசியம்
  • Thaiฮัสเซียม
  • Turkishhassiyum
  • Uyghurھاسسىي
  • Ukrainianгасій
  • Urduہاسیئم
  • Vepshassii
  • Vietnamesehassi
  • Warayhassyo
  • Kalmykхассиум
  • YorubaHassiomu
  • Chinese𨭆
  • Bretonhasiom
  • Cebuanohassyo
  • Macedonianхасиум
  • Central Kurdishھاسیۆم
  • Odiaହାସିଅମ
  • Gujaratiહેસીયમ
  • Occitanassi
  • Tatarһассий
  • Western Panjabiہاسیم
  • Hindiहैसियम
  • Somalihasiyaam
  • Kazakhхассий
  • Newariह्यासियम
  • Cantonese𨭆
  • Belarusian (Taraskievica orthography)Гас
  • Chinese (China)𬭶
  • Chinese (Simplified)𬭶
  • Chinese (Taiwan)𨭆
  • Chinese (Hong Kong SAR China)𨭆
  • Chinese (Traditional)𨭆
  • AromanianHassiu
  • Kyrgyzхассий
  • Faroesehassium
  • Nepaliह्यासियम
  • Sanskritह्यासियम
  • Maltesehassju
  • Scottish Gaelichassium
  • Paliह्यासियम
  • Bhojpuriहस्सियम
  • Teluguహాసియం
  • Limburgishhassium
  • cdohassium
  • Min Nan ChineseHassium
  • Uzbekхassiy
  • Asturianhassiu
  • English (United Kingdom)hassium
  • Chinese (Macao SAR China)𨭆
  • Chinese (Malaysia)𬭶
  • Chinese (Singapore)𬭶
  • Portuguese (Brazil)hássio
  • Tibetanཧ་སིམ།
  • Literary Chinese𨭆
  • Tagaloghasyo
  • kbphasɩyɔm
  • Afrikaanshassium
  • Lingua Franca Novahasio
  • Northern Frisianhassium
  • Volapükhasin
  • Low GermanHassium
  • Icelandichassín
  • TajikҲассий
  • Georgianჰასიუმი
  • Wu Chinese𬭶
  • SardinianHàssiu
  • SwahiliHassi
  • Burmeseဟက်စ်စီယမ်
  • Moroccan Arabicهاسيوم
  • Pashtoهاسيوم
  • Egyptian Arabicهاسيوم
  • CornishHassiom
  • BalineseHassium
  • BikolHasyo