Neodymium

Koushik 26/06/2026 19:58:08 Updated 26/06/2026 19:58:08

Property	Value
Atomic Number	60
Element	Neodymium
Symbol	Nd
Atomic Mass	144.242 u
Number of Neutrons	84 (most common isotope, Neodymium-144)
Number of Protons	60
Number of Electrons	60
Period	6
Group	Lanthanide (no fixed group number)
Phase	Solid
Radioactive	No (some isotopes are radioactive)
Natural	Yes
Metal	Yes
Nonmetal	No
Metalloid	No
Type	Lanthanide
Atomic Radius	229 pm
Electronegativity	1.14 (Pauling scale)
First Ionization Energy	5.525 eV
Density	7.01 g/cm³
Melting Point	1024 °C
Boiling Point	3074 °C
Number of Isotopes	7 naturally occurring (Nd-142, Nd-143, Nd-144, Nd-145, Nd-146, Nd-148, Nd-150)
Discoverer	Carl Auer von Welsbach
Year	1885
Specific Heat	0.190 J/g·K
Number of Shells	6
Number of Valence Electrons	3