Unt

Lawrencium Lawrencium. A radioactive actinide discovered in 1961. It has the atomic symbol Lr, atomic number 103, and atomic weight of 257. There are two isotopes with mass number 257 or 258, and mass number 256.

[symbol for lawrencium.

[1. An artificial transplutonium element; atomic no. 103; atomic wt. 262.11.

Molecular Formula: Lr

InChI: InChI=1/Lr

InChIKey: InChIKey=CNQCVBJFEGMYDW-UHFFFAOYAB
SMILES: [Lr]

Names:
    CHEBI:33397
    LAWRENCIUM
    lawrencium
    Lr
    unniltrium
    Unt
    103Lr
    22537-19-5

Registries:
    PubChem CID 31192
    ChEBI 33397
    PubChem ID 11533813
    WebElements Lr