Cite
 

Sodium


3
11
22.989768
KEY
Chemical Element Symbol Key

SEE ALSO
Sodium
Columbia Encyclopedia
PREVIOUS
Neon (Ne)
NEXT
Symbol: Na
Atomic Number: 11
Atomic Weight: 22.989768
Element Classification: Alkali Metal
Discovered By: Sir Humphrey Davy
Discovery Date: 1807 (England)
Name Origin: Medieval Latin: sodanum, (headache remedy), symbol from Latin natrium, (sodium carbonate).
Density (g/cc): 0.971
Melting Point (K): 370.96
Boiling Point (K): 1156.1
Appearance: Soft, silvery-white metal
Atomic Radius (pm): 190
Atomic Volume (cc/mol): 23.7
Covalent Radius (pm): 154
Ionic Radius: 97 (+1e)
Specific Heat (@20°C J/g mol): 1.222
Fusion Heat (kJ/mol): 2.64
Evaporation Heat (kJ/mol): 97.9
Thermal Conductivity (@25°C W/m K):
Debye Temperature (K): 150.00
Pauling Negativity Number: 0.93
First Ionizing Energy (kJ/mol): 495.6
Oxidation States: 1
Electronic Configuration: [Ne] 3s1
Lattice Structure: Body-Centered Cubic (BCC
Lattice Constant (Å): 4.230
Lattice C/A Ratio: n/a


Back to: periodic table