The chemical symbol of actinium is Ac.
The symbol of an isotope:
- as superscript to the left of Ac is the Atomic Mass of the isotope
- as subscript to the left of Ac is the atomic number 89
Actinium C was the old name of the isotope bismuth-211.
The chemical symbol of actinium is Ac.
Actinium has 36 isotopes and 7 nuclear isomers.
The number of neutrons is the difference between the atomic mass of an isotope and the atomic number. Actinium has a great number of isotopes, each with a different mass or number of neutrons.
The chemical symbol of actinium is Ac.
Actinium = Ac
Actinium has 89 protons and 138 neutrons (the natural isotope 227Ac).
Actinium has 89 protons and electrons; the natural isotope 227Ac has 138 neutrons.
Ac, from the first two letters of Actinium.
Actinium is a radioactive element with symbol Ac.
For the isotope actinium-227 the mass is 227,027 752 1(26) g.
Actinium-227 is a natural isotope; the half life is 24,77 years. It is a emitter of alpha and beta.