potassium 44 | has symbol 44K | ![2001-09-27 09:29:28.0 2001-09-27 09:29:28.0](facet.gif) |
has nuclear magnetic moment μ = -0.856 nuclear magnetons with diamagnetic correction | ![has source: Fuller, G.H. 1976, <i>Journal of Physical Chemistry Reference Data</i> <b>5</b> 835 'Nuclear Spins and Moments', 2001-09-27 09:29:28.0 has source: Fuller, G.H. 1976, <i>Journal of Physical Chemistry Reference Data</i> <b>5</b> 835 'Nuclear Spins and Moments', 2001-09-27 09:29:28.0](facet.gif) |
has nuclear spin I = 2- h/2π | ![has source: Fuller, G.H. 1976, <i>Journal of Physical Chemistry Reference Data</i> <b>5</b> 835 'Nuclear Spins and Moments', 2001-09-27 09:29:28.0 has source: Fuller, G.H. 1976, <i>Journal of Physical Chemistry Reference Data</i> <b>5</b> 835 'Nuclear Spins and Moments', 2001-09-27 09:29:28.0](facet.gif) |
has decay mode β- (5.66 Mev) | ![2001-09-27 09:29:28.0 2001-09-27 09:29:28.0](facet.gif) |
has decay mode γ | ![2001-09-27 09:29:28.0 2001-09-27 09:29:28.0](facet.gif) |
has half life 22.1 minutes | ![2001-09-27 09:29:28.0 2001-09-27 09:29:28.0](facet.gif) |
has number of nucleons 44 | ![2001-09-27 09:29:28.0 2001-09-27 09:29:28.0](facet.gif) |
has number of neutrons 25 | ![2001-09-27 09:29:28.0 2001-09-27 09:29:28.0](facet.gif) |
has atomic mass 43.96156 | ![2001-09-27 09:29:28.0 2001-09-27 09:29:28.0](facet.gif) |
is an instance of potassium | ![has URL: http://nucleardata.nuclear.lu.se/nucleardata/toi/nuclide.asp?iZA=190044, 2001-09-27 09:29:28.0 has URL: http://nucleardata.nuclear.lu.se/nucleardata/toi/nuclide.asp?iZA=190044, 2001-09-27 09:29:28.0](facet.gif) |
potassium | has lethal intake 2600 mg kg-1 | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has reserves > 1 × 1010 tonnes | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has main mining area Germany, Spain, Canada, USA, Italy | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has mineral alunite, carnalite, orthoclase (mined for porcelain, ceramics and glass), sylvite | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has neutron scattering length 0.367 × 10-12 cm | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has electron affinity 48.4 kJ mol-1 from K to K- | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has toxic intake 4 g of KCl | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has poisson's ratio 0.35 GPa at 83 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has rigidity modulus 1.30 GPa | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has young's modulus 3.53 GPa at 83 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has mass magnetic susceptibility +6.7 × 10-9 kg-1 m3 for solid | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has electrical resistivity 6.15 × 10-8 Ω m at 273 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has van der Waals radii 231 pm | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has covalent radii 203 pm | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has thermal neutron capture cross section 2.1 barns | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has longest lived isotope potassium 39 | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has isotope mass range 35 to 51 | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has number of isotopes 18 including nuclear isomers | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has pronunciation poh-tass-ium | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has name origin potash from English | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has discovery location London, England | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has abundance 1.45 × 105 in Sun relative to H = 1 × 1012 | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has abundance 21000 p.p.m. in Earth's crust | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has abundance 5 × 106 p.p.m. in seawater | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has specimen metal chunks (in mineral oil) or ingots. Warning! | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has world production 200 tonnes year-1 for metal form | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has world production 51 × 106 tonnes year-1 for salts | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has chief source sylvite, carnalite, alunite | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has mass absorption coefficient 143 cm2 g-1 for CuKalpha X-ray diffraction | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has mass absorption coefficient 15.8 cm2 g-1 for MoKalpha X-ray diffraction | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has space group Im3m | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has crystal cell dimension a = 533.4 pm | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has crystal type b.c.c | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has atomic emission line 404.414 nm for K I | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has atomic emission line 691.108 nm for K I | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has atomic emission line 693.877 nm for K I | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has atomic emission line 766.491 nm for K I (strong) | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has atomic emission line 769.896 nm for K I | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has term symbol 2S1/2 in ground state | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has electron configuration [Ar]4s1 in ground state | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has mass of element in person 140 g for a 70 kg average person | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has daily dietary intake 1.4 - 7.4 g | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has level in humans 1620 mg dm-3 in blood | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has level in humans 2100 p.p.m. in bone | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has level in humans 16000 p.p.m. in liver | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has level in humans 16000 p.p.m. in muscle | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has hazard excess ingestion of KCl (dietary supplement) can be fatal | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has biological role essential to all living things | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has linear expansion coefficient 83 × 10-6 K-1 | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has thermal conductivity 102.4 W m-1 K-1 at 300 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has molar volume 45.36 cm3 | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has heat capacity 29.58 J K-1 mol-1 for solid at constant pressure 0.1 MPa at 298.15 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has heat capacity 20.786 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has heat of vaporization 77.53 kJ mol-1 | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has heat of fusion 2.40 kJ mol-1 | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has boiling point 1047 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has melting point 336.80 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has electronegativity 0.82 Pauling | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has relative atomic mass 39.0983 in units of 12C = 12.000 | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has ionic radii 133 pm for K+ | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has atomic radii 227 pm | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has number of protons 19 | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has registry number 7440-09-7 for Chemical Abstracts System database | ![has URL: http://info.cas.org, 2001-09-27 09:29:26.0 has URL: http://info.cas.org, 2001-09-27 09:29:26.0](facet.gif) |
has density 862 kg m-3 for solid at 293 K | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has density 828 kg m-3 for liquid at 336.80 K melting point | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has synthesis mechanism combine sodium metal with potassium chloride | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has ocean oxidation state I | ![2001-09-27 09:28:28.0 2001-09-27 09:28:28.0](facet.gif) |
has ocean residence time 21000 years | ![2001-09-27 09:28:28.0 2001-09-27 09:28:28.0](facet.gif) |
has symbol name origin kalium from Greek | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has atomic number 19 | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
reacts with water violently | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has discovery date 1807 (isolated) | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has discoverer Sir Humphry Davy | ![2001-09-27 09:29:27.0 2001-09-27 09:29:27.0](facet.gif) |
has uses compounds are used in fertilizers, chemicals and glass | ![2001-09-27 09:29:26.0 2001-09-27 09:29:26.0](facet.gif) |
has image ![](images/element/K.jpg) | ![2001-09-27 09:28:33.0 2001-09-27 09:28:33.0](facet.gif) |
alkali metal | has group 1 | ![2001-09-27 09:28:24.0 2001-09-27 09:28:24.0](facet.gif) |
has hardness soft | ![2001-09-27 09:28:19.0 2001-09-27 09:28:19.0](facet.gif) |
has appearancee silvery except for francium | ![2001-09-27 09:28:19.0 2001-09-27 09:28:19.0](facet.gif) |
has synonym group I element | ![2001-09-27 09:28:24.0 2001-09-27 09:28:24.0](facet.gif) |
accumulating oceanic element | has ocean concentration depth indenpendent | ![2001-09-27 09:28:28.0 2001-09-27 09:28:28.0](facet.gif) |
lithophile element | has occurrence in silicate materials such as igneous rocks | ![2001-09-27 09:28:26.0 2001-09-27 09:28:26.0](facet.gif) |
element | is a part of Universe | ![2001-09-27 09:32:17.0 2001-09-27 09:32:17.0](facet.gif) |
particle | obeys uncertainty principle | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has frequency inversely proportional to the wavelength | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has wavelength inversely proportional to its momentum | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
has charge | ![2001-09-27 09:28:01.0 2001-09-27 09:28:01.0](facet.gif) |
has mass | ![2001-09-27 09:28:02.0 2001-09-27 09:28:02.0](facet.gif) |
physical object | has location or center of gravity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has angular momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has velocity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has temperature | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has volume | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has extent | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has material | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |