Template:Infobox sodium

Sodium, ₁₁Na

Sodium
Appearance	sillery white metallic
Standard atomic weight Ar, std(Na)	7001229897692800000♠22.98976928(2)
Sodium in the periodic cairt
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium Li ↑ Na ↓ K neon ← sodium → magnesium
Atomic nummer (Z)	11
Group	group 1 (alkali metals)
Period	period 3
Block	s-block
Element category	Alkali metal
Electron confeeguration	[Ne] 3s1
Electrons per shell	2,8,1
Pheesical properties
Phase at STP	solit
Meltin pynt	370.944 K ​(97.794 °C, ​208.029 °F)
Bylin pynt	1156.090 K ​(882.940 °C, ​1621.292 °F)
Density (near r.t.)	0.968 g/cm3
when liquid (at m.p.)	0.927 g/cm3
Creetical pynt	(extrapolatit) 2573 K, 35 MPa
Heat o fusion	2.60 kJ/mol
Heat o vapourisation	97.42 kJ/mol
Molar heat capacity	28.230 J/(mol·K)
Vapour pressur P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 554 617 697 802 946 1153
Atomic properties
Oxidation states	−1, +1 strangly basic
Electronegativity	Pauling scale: 0.93
Ionisation energies	(more)
Atomic radius	empirical: 186 pm
Covalent radius	166±9 pm
Van der Waals radius	227 pm
Colour lines in a spectral range Spectral lines o sodium
Ither properties
Naitural occurrence	primordial
Creestal structur	​body-centred cubic (bcc)
Speed o soond thin rod	3200 m/s (at 20 °C)
Thermal expansion	71 µm/(m·K) (at 25 °C)
Thermal conductivity	142 W/(m·K)
Electrical resistivity	47.7 n Ω·m (at 20 °C)
Magnetic orderin	paramagnetic
Young's modulus	10 GPa
Shear modulus	3.3 GPa
Bulk modulus	6.3 GPa
Mohs haurdness	0.5
Brinell haurdness	0.69 MPa
CAS Nummer	7440-23-5
History
Diskivery	Humphry Davy (1807)
First isolation	Humphry Davy (1807)
Main isotopes o sodium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct 22Na trace 2.602 y β+→γ 0.5454 22Ne* 1.27453(2) 22Ne ε→γ - 22Ne* 1.27453(2) 22Ne β+ 1.8200 22Ne 23Na 100% stable
* = excited state

style="text-align:left"| data m.p. cat
	in	calc from C	diff	report	ref
C	97.794	—	—
K	370.944	370.944	0
F	208.029	208.029	0
WD	!
input	C: 97.794, K: 370.944, F: 208.029
comment

style="text-align:left"| data b.p. cat
	in	calc from C	diff	report	ref
C	882.940	—	—
K	1156.090	1156.090	0
F	1621.292	1621.292	0
WD	!
input	C: 882.940, K: 1156.090, F: 1621.292
comment

References

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