3 - Lithium alkali metal

Discovered by Johan August Arfwedson in 1817

  • Atomic Radius (Å)
  • Cividis
Lithium

Lithium (from Greek:λίθος lithos, "stone") is a chemical element with the symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions it is the lightest metal and the least dense solid element.

H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
57-71 La-Lu Lanthanides
89-103 Ac-Lr Actinides
 Shell Electrons Orbitals
122 in 1s
211 in 2s
LithiumLiElectron 1Electron 2Electron 1
silvery-white Appearance
6.94  u Atomic Mass
1.45  Å Atomic Radius
1.62k  K Boiling Point
1 Group
1 Common Oxidation States
1.28  Å Covalent Radius
0.534  g/cm³ Density
59.6  kJ/mol Electron Affinity
1s2 2s1 Electron Configuration
[He] 2s1 Electron Configuration (semantic)
0.98 Electronegativity
3 Electrons
5.39  eV First Ionization Energy
1 ICSD Oxidation States
520.2, 7298.1, 11815  kJ/mol Ionization Energies
454  K Melting Point
12 Mendeleev Number
24.9  J/(mol·K) Molar Heat
2 Number of Shells
1 Electron Valency
4 Neutrons
3 Atomic Number
5 Number of Isotopes
1 Oxidation States
2 Period
Solid Phase
3 Protons
2, 1 Electron Shell Occupations
3.58  J/(g K) Specific Heat