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sodiummagnesium
Li
Na
K  
 
 

General
Name, Symbol, Number sodium, Na, 11
Series alkali metal
Group, Period, Block 1 (IA), 3 , s
DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness 968 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes, 0.5
AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of silvery white
Atomic properties
Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot 22.989770 amuTo help compare different orders of magnitude we list here masses between 6. 02 amu and 60. 2 amu (10-26 kg and 10-25 kg). See also masses of other orders of magnitude. lighter masses 6. 941 amu atomic mass of lithium 44. 955910 amu atomic mass of scandiu
Atomic radiusAtomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium and is measured in picometers or Angstroms. Atomic radii are called covalent radii (a reference to the types of bonds formed) whe (calc.) 180 (190) pmTo help compare different orders of magnitude this page lists lengths between 100 pm and 1 nm (10-10 m and 10-9 m). See also lengths of other orders of magnitude. Lengths shorter than 100 pm 100 pm 1 Angstrom 100 pm (0. 1 nm) covalent radius of sulfur ato
Covalent radius 154 pm
van der Waals radius 227 pm
Electron configuration [ Ne]3s1
e- 's per energy level 2, 8, 1
Oxidation states ( Oxide) 1 (strong base)
Crystal structure Cubic body centered
Physical properties
State of matter solid ( paramagnetic)
Melting point 370.87 K (207.9 ° F)
Boiling point 1156 K (1621 °F)
Molar volume 23.78 ×10-6 m3/mol
Heat of vaporization 96.96 kJ/mol
Heat of fusion 2.598 kJ/mol
Vapor pressure 1.43×10-5 Pa at 1234 K
Speed of sound 3200 m/s at 293.15 K
Miscellaneous
Electronegativity 0.93 ( Pauling scale)
Specific heat capacity 1230 J/(kg*K)
Electrical conductivity 21 106/(m· ohm)
Thermal conductivity 141 W/(m*K)
1st ionization potential 495.8 kJ/mol
2nd ionization potential 4562 kJ/mol
3rd ionization potential 6910.3 kJ/mol
4th ionization potential 9543 kJ/mol
5th ionization potential 13354 kJ/mol
6th ionization potential 16613 kJ/mol
7th ionization potential 20117 kJ/mol
8th ionization potential 25496 kJ/mol
9th ionization potential 28932 kJ/mol
10th ionization potential 141362 kJ/mol
Most stable isotopes
iso NA half-life DM DE M eV DP
22Na {syn.} 2.602 y epsilon 2.842 22Ne
23Na 100% Na is stable with 12 neutrons
SI units & STP are used except where noted.


Sodium is the chemical element in the periodic table that has the symbol Na (Natrium in Latin) and atom number 11. Sodium is a soft, waxy, silvery reactive metal belonging to the alkali metals that is abundant in natural compounds (especially halite). It is highly reactive, burns with a yellow flame, oxidizes in air and reacts violently with water, forcing it to be kept under oil.





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