potassium 45 | has symbol 45K | |
has nuclear magnetic moment μ = +0.1734 nuclear magnetons with diamagnetic correction | |
has nuclear spin I = 3/2+ h/2π | |
has decay mode β- (4.20 Mev) | |
has decay mode γ | |
has half life 17.8 minutes | |
has number of nucleons 45 | |
has number of neutrons 26 | |
has atomic mass 44.960696 | |
is an instance of potassium | |
potassium | has lethal intake 2600 mg kg-1 | |
has reserves > 1 × 1010 tonnes | |
has main mining area Germany, Spain, Canada, USA, Italy | |
has mineral alunite, carnalite, orthoclase (mined for porcelain, ceramics and glass), sylvite | |
has neutron scattering length 0.367 × 10-12 cm | |
has electron affinity 48.4 kJ mol-1 from K to K- | |
has toxic intake 4 g of KCl | |
has poisson's ratio 0.35 GPa at 83 K | |
has rigidity modulus 1.30 GPa | |
has young's modulus 3.53 GPa at 83 K | |
has mass magnetic susceptibility +6.7 × 10-9 kg-1 m3 for solid | |
has electrical resistivity 6.15 × 10-8 Ω m at 273 K | |
has van der Waals radii 231 pm | |
has covalent radii 203 pm | |
has thermal neutron capture cross section 2.1 barns | |
has longest lived isotope potassium 39 | |
has isotope mass range 35 to 51 | |
has number of isotopes 18 including nuclear isomers | |
has pronunciation poh-tass-ium | |
has name origin potash from English | |
has discovery location London, England | |
has abundance 1.45 × 105 in Sun relative to H = 1 × 1012 | |
has abundance 21000 p.p.m. in Earth's crust | |
has abundance 5 × 106 p.p.m. in seawater | |
has specimen metal chunks (in mineral oil) or ingots. Warning! | |
has world production 200 tonnes year-1 for metal form | |
has world production 51 × 106 tonnes year-1 for salts | |
has chief source sylvite, carnalite, alunite | |
has mass absorption coefficient 143 cm2 g-1 for CuKalpha X-ray diffraction | |
has mass absorption coefficient 15.8 cm2 g-1 for MoKalpha X-ray diffraction | |
has space group Im3m | |
has crystal cell dimension a = 533.4 pm | |
has crystal type b.c.c | |
has atomic emission line 404.414 nm for K I | |
has atomic emission line 691.108 nm for K I | |
has atomic emission line 693.877 nm for K I | |
has atomic emission line 766.491 nm for K I (strong) | |
has atomic emission line 769.896 nm for K I | |
has term symbol 2S1/2 in ground state | |
has electron configuration [Ar]4s1 in ground state | |
has mass of element in person 140 g for a 70 kg average person | |
has daily dietary intake 1.4 - 7.4 g | |
has level in humans 1620 mg dm-3 in blood | |
has level in humans 2100 p.p.m. in bone | |
has level in humans 16000 p.p.m. in liver | |
has level in humans 16000 p.p.m. in muscle | |
has hazard excess ingestion of KCl (dietary supplement) can be fatal | |
has biological role essential to all living things | |
has linear expansion coefficient 83 × 10-6 K-1 | |
has thermal conductivity 102.4 W m-1 K-1 at 300 K | |
has molar volume 45.36 cm3 | |
has heat capacity 29.58 J K-1 mol-1 for solid at constant pressure 0.1 MPa at 298.15 K | |
has heat capacity 20.786 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K | |
has heat of vaporization 77.53 kJ mol-1 | |
has heat of fusion 2.40 kJ mol-1 | |
has boiling point 1047 K | |
has melting point 336.80 K | |
has electronegativity 0.82 Pauling | |
has relative atomic mass 39.0983 in units of 12C = 12.000 | |
has ionic radii 133 pm for K+ | |
has atomic radii 227 pm | |
has number of protons 19 | |
has registry number 7440-09-7 for Chemical Abstracts System database | |
has density 862 kg m-3 for solid at 293 K | |
has density 828 kg m-3 for liquid at 336.80 K melting point | |
has synthesis mechanism combine sodium metal with potassium chloride | |
has ocean oxidation state I | |
has ocean residence time 21000 years | |
has symbol name origin kalium from Greek | |
has atomic number 19 | |
reacts with water violently | |
has discovery date 1807 (isolated) | |
has discoverer Sir Humphry Davy | |
has uses compounds are used in fertilizers, chemicals and glass | |
has image | |
alkali metal | has group 1 | |
has hardness soft | |
has appearancee silvery except for francium | |
has synonym group I element | |
accumulating oceanic element | has ocean concentration depth indenpendent | |
lithophile element | has occurrence in silicate materials such as igneous rocks | |
element | is a part of Universe | |
particle | obeys uncertainty principle | |
has frequency inversely proportional to the wavelength | |
has wavelength inversely proportional to its momentum | |
has charge | |
has mass | |
physical object | has location or center of gravity | |
has angular momentum | |
has velocity | |
has momentum | |
has temperature | |
has volume | |
has extent | |
has material | |