Tantalum-181 (Ta-181)

Identity

Protons

73

Neutrons

108

Mass number

181

Mass

180.9 ± 1.7 u

Mass excess

-48.439 MeV

Spin

7/2+*

Stability

stable

Natural occurrence

99.99 % of tantalum

Produced by

• Hf-181
• W-181