ފަންވަތް:Infobox sodium

ވިކިޕީޑިއާ އިންވިކިޕީޑިއާ
11 neonsodiummagnesium
Li

Na

K
General
Name, symbol, number sodium, Na, 11
Chemical seriesalkali metals
Group, period, block 13, s
Appearancesilvery white
Standard atomic weight 22.98976928(2)g·mol−1
Electron configuration [Ne] 3s1
Electrons per shell 2, 8, 1
Physical properties
Phasesolid
Density (near r.t.)0.968 g·cm−3
Liquid density at m.p.0.927 g·cm−3
Melting point370.87 K
(97.72 °C, 207.9 °F)
Boiling point1156 K
(883 °C, 1621 °F)
Critical point(extrapolated)
2573 K, 35 MPa
Heat of fusion2.60 kJ·mol−1
Heat of vaporization97.42 kJ·mol−1
Heat capacity(25 °C) 28.230 J·mol−1·K−1
Vapor pressure
P/Pa 1 10 100 1 k 10 k 100 k
at T/K 554 617 697 802 946 1153
Atomic properties
Crystal structurecubic body centered
Oxidation states1
(strongly basic oxide)
Electronegativity0.93 (Pauling scale)
Ionization energies
(more)
1st: 495.8 kJ·mol−1
2nd: 4562 kJ·mol−1
3rd: 6910.3 kJ·mol−1
Atomic radius180 pm
Atomic radius (calc.)190 pm
Covalent radius154 pm
Van der Waals radius227 pm
Miscellaneous
Magnetic orderingparamagnetic
Electrical resistivity(20 °C) 47.7 nΩ·m
Thermal conductivity(300 K) 142 W·m−1·K−1
Thermal expansion(25 °C) 71 µm·m−1·K−1
Speed of sound (thin rod)(20 °C) 3200 m/s
Young's modulus10 GPa
Shear modulus3.3 GPa
Bulk modulus6.3 GPa
Mohs hardness0.5
Brinell hardness0.69 MPa
CAS registry number7440-23-5
Selected isotopes
Main article: Isotopes of sodium
iso NA half-life DM DE (MeV) DP
22Na syn 2.602 y β+γ 0.5454 22Ne*
1.27453(2)[1] 22Ne
εγ - 22Ne*
1.27453(2) 22Ne
β+ 1.8200 22Ne
23Na 100% 23Na is stable with 12 neutrons
References
  1. ފަންވަތް:Cite journal