the chemical symbol for sodium is Na and its atomic number is 11.
It is listed in the periodic table of elements in group 1, row 3 and block s.
Sodium belongs to the family or chemical series of alkali metals like: cesium
This element is stable.
The name Sodium comes from the word sod, which is a name of tree that contains alot of Sodium carbonate.
Atomic number (Z) 11
Group, block group 1 (alkali metals), s-block
Period period 3
Element category: alkali metal
Standard atomic weight (±) (Ar): 22.98976928(2)
Electron configuration: [Ne] 3s1
per shell: 2, 8, 1
Physical properties:
Phase: solid
Melting point: 370.944 K (97.794 °C, 208.029 °F)
Boiling point: 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
Critical point: 2573 K, 35 MPa (extrapolated)
Heat of fusion: 2.60 kJ/mol
Heat of vaporization: 97.42 kJ/mol
Molar heat capacity: 28.230 J/(mol·K)
Atomic properties:
Oxidation states: +1, −1 (a strongly basic oxide)
Electronegativity: Pauling scale: 0.93
Ionization energies 1st: 495.8 kJ/mol
2nd: 4562 kJ/mol
3rd: 6910.3 kJ/mol
Atomic radius empirical: 186 pm
Covalent radius: 166±9 pm
Van der Waals radius: 227 pm
Crystal structure: body-centered cubic