Actinium has 2, 8, 18, 32, 18, 9, 2 electrons in each shell.
Actinium has three valence electrons.
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 electrons in actinium are disposed on seven energy levels.
There are 2 valence electrons in Actinium.
The electrons in actinium are disposed on seven energy levels.
The electrons in actinium are disposed on seven energy levels.
Actinium has 89 protons and electrons; the natural isotope 227Ac has 138 neutrons.
For actinium, which has an atomic number of 89, the electron configuration is 2-8-18-32-18-9-2. This means there are 2 electrons in the first shell, 8 in the second shell, 18 in the third shell, 32 in the fourth shell, 18 in the fifth shell, and 9 in the sixth shell.
Krypton has 8 valence electrons.
Actinium has seven electron shells.
All the isotopes of actinium has 89 protons.
Actinium has seven electron shells.