Template:Infobox potassium

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Potassium
19K
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (other metals)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (other metals)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (other metals)
Tin (other metals)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (other metals)
Lead (other metals)
Bismuth (other metals)
Polonium (other metals)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
Na

K

Rb
argonpotassiumcalcium
Potassium in the periodic table
Appearance
silvery gray


Potassium pearls under paraffin oil. The large pearl measures 0.5 cm. Below: spectral lines of potassium
General properties
Name, symbol, number potassium, K, 19
Pronunciation /pɵˈtæsiəm/ po-TAS-ee-əm
Element category alkali metal
Group, period, block 1 (alkali metals), 4, s
Standard atomic weight 39.0983(1)
Electron configuration [Ar] 4s1
2, 8, 8, 1
Physical properties
Phase solid
Density (near r.t.) 0.862 g·cm−3
Liquid density at m.p. 0.828 g·cm−3
Melting point 336.7 K, 63.5 °C, 146.3 °F
Boiling point 1032 K, 759 °C, 1398 °F
Critical point 2223 K, 16[1] MPa
Heat of fusion 2.33 kJ·mol−1
Heat of vaporization 76.9 kJ·mol−1
Molar heat capacity 29.6 J·mol−1·K−1
Atomic properties
Oxidation states 1, −1
(strongly basic oxide)
Electronegativity 0.82 (Pauling scale)
Ionization energies
(more)
1st: 418.8 kJ·mol−1
2nd: 3052 kJ·mol−1
3rd: 4420 kJ·mol−1
Atomic radius 227 pm
Covalent radius 203±12 pm
Van der Waals radius 275 pm
Miscellanea
Crystal structure body-centered cubic
Potassium has a body-centered cubic crystal structure
Magnetic ordering paramagnetic[2]
Electrical resistivity (20 °C) 72 nΩ·m
Thermal conductivity 102.5 W·m−1·K−1
Thermal expansion (25 °C) 83.3 µm·m−1·K−1
Speed of sound (thin rod) (20 °C) 2000 m·s−1
Young's modulus 3.53 GPa
Shear modulus 1.3 GPa
Bulk modulus 3.1 GPa
Mohs hardness 0.4
Brinell hardness 0.363 MPa
CAS registry number 7440-09-7
History
Discovery Humphry Davy (1807)
First isolation Humphry Davy (1807)
Most stable isotopes
Main article: Isotopes of potassium
iso NA half-life DM DE (MeV) DP
39K 93.26% 39K is stable with 20 neutrons
40K 0.012% 1.248(3)×109 y β 1.311 40Ca
ε 1.505 40Ar
β+ 1.505 40Ar
41K 6.73% 41K is stable with 22 neutrons
· references

References

These references will appear in the article, but this list appears only on this page.
  1. ^ Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.122. ISBN 1439855110. 
  2. ^ Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5. 
Documentation icon Template documentation[view] [edit] [history] [purge]

This infobox is used for chemical elements. {{Infobox element}} is the core template.

Parameters[edit]

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Adding references[edit]

References can be added as usual. When using a named reference both on the page and in the infobox, like

<ref name="CRC">{{cite book|...}}</ref>

add the full definition on both pages (best use copy-paste). In the article, they will merge nicely.

Hydrogen example[edit]

Atomic number 119 and above[edit]

When the atomic number is ≥ 119, the miniature periodic table shows an extended version (period 8). See for example {{infobox ununennium}}.

Subtemplates used[edit]

Isotopes[edit]

Isotopes subtemplates are to be entered by the editor:

Example from hydrogen:

| isotopes =
{{Infobox element/isotopes stable| mn=1 | sym=H | na=99.985% | n=0 | link=Hydrogen atom}}
{{Infobox element/isotopes stable| mn=2 | sym=H | na=0.015% | n=1 | link=Deuterium}}
{{Infobox element/isotopes decay | mn=3 | sym=H | na=[[Trace radioisotope|trace]] | hl=12.32 [[years|y]] | dm=[[beta minus decay|β<sup>−</sup>]] | de=0.01861 | link1=helium-3 | pn=3 | ps=He | link=Tritium}}

produces the subtable:

1H 99.985% 1H is stable with 0 neutrons
2H 0.015% 2H is stable with 1 neutron
3H trace 12.32 y β 0.01861 3He

Other[edit]

All other subtemplates, below, are used implicitly (automatically):

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Periodic table graph:

Data:

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See also[edit]

Index to chemical element infoboxes
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1 1HI-bx E
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4 19KI-bx E
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22TiI-bx E
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23VI-bx E
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24CrI-bx E
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25MnI-bx E
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26FeI-bx E
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27CoI-bx E
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28NiI-bx E
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29CuI-bx E
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30ZnI-bx E
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33AsI-bx E
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34SeI-bx E
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35BrI-bx E
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36KrI-bx E
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5 37RbI-bx E
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38SrI-bx E
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47AgI-bx E
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48CdI-bx E
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49InI-bx E
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50SnI-bx E
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51SbI-bx E
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52TeI-bx E
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6 55CsI-bx E
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56BaI-bx E
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1 asterisk 72HfI-bx E
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73TaI-bx E
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75ReI-bx E
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76OsI-bx E
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77IrI-bx E
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78PtI-bx E
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79AuI-bx E
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80HgI-bx E
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81TlI-bx E
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82PbI-bx E
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83BiI-bx E
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84PoI-bx E
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85AtI-bx E
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7 87FrI-bx E
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88RaI-bx E
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1 asterisk 104RfI-bx E
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105DbI-bx E
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106SgI-bx E
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107BhI-bx E
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108HsI-bx E
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109MtI-bx E
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110DsI-bx E
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113UutI-bx E
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114FlI-bx E
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116LvI-bx E
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117UusI-bx E
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118UuoI-bx E
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1 asterisk 57LaI-bx E
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58CeI-bx E
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59PrI-bx E
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60NdI-bx E
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61PmI-bx E
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62SmI-bx E
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63EuI-bx E
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64GdI-bx E
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68ErI-bx E
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71LuI-bx E
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1 asterisk 89AcI-bx E
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