Actinium Nucleus 221Ac

      Proton     Neutron   Nuclear Spin Energy State
  221Ac     89     132     -9/2      

Actinium Nucleus 221Ac Layered View

221Ac

 

221Ac

Actinium Nucleus 221Ac Front View

221Ac

Actinium Nucleus 221Ac Back View

221Ac

Actinium Nucleus 221Ac Left View

221Ac

Actinium Nucleus 221Ac Right View