Lanthanide

15 elements

Rare earth elements with atomic numbers 57-71. They are characterized by the filling of 4f electron orbitals. Despite being called 'rare earth,' most lanthanides are relatively abundant in the Earth's crust.

57 Solid La Lanthanum 138.91 u
MP: — BP: —
58 Solid Ce Cerium 140.12 u
MP: — BP: —
59 Solid Pr Praseodymium 140.91 u
MP: — BP: —
60 Solid Nd Neodymium 144.24 u
MP: — BP: —
61 Solid Pm Promethium 145.0 u
MP: — BP: —
62 Solid Sm Samarium 150.36 u
MP: — BP: —
63 Solid Eu Europium 151.96 u
MP: — BP: —
64 Solid Gd Gadolinium 157.25 u
MP: — BP: —
65 Solid Tb Terbium 158.93 u
MP: — BP: —
66 Solid Dy Dysprosium 162.5 u
MP: — BP: —
67 Solid Ho Holmium 164.93 u
MP: — BP: —
68 Solid Er Erbium 167.26 u
MP: — BP: —
69 Solid Tm Thulium 168.93 u
MP: — BP: —
70 Solid Yb Ytterbium 173.05 u
MP: — BP: —
71 Solid Lu Lutetium 174.97 u
MP: — BP: —

Comparison Table

# Symbol Name Mass (u) Melting Pt Boiling Pt Density Phase
57 La Lanthanum 138.91 — — — Solid
58 Ce Cerium 140.12 — — — Solid
59 Pr Praseodymium 140.91 — — — Solid
60 Nd Neodymium 144.24 — — — Solid
61 Pm Promethium 145.0 — — — Solid
62 Sm Samarium 150.36 — — — Solid
63 Eu Europium 151.96 — — — Solid
64 Gd Gadolinium 157.25 — — — Solid
65 Tb Terbium 158.93 — — — Solid
66 Dy Dysprosium 162.5 — — — Solid
67 Ho Holmium 164.93 — — — Solid
68 Er Erbium 167.26 — — — Solid
69 Tm Thulium 168.93 — — — Solid
70 Yb Ytterbium 173.05 — — — Solid
71 Lu Lutetium 174.97 — — — Solid