Actinium has three valence electrons.
The electrons in actinium are disposed on seven energy levels.
There are 27 valance electrons.
2 valance electrons
There are 2 valence electrons in Actinium.
The electrons in actinium are disposed on seven energy levels.
Iodine has 7 valance electrons
The electrons in actinium are disposed on seven energy levels.
Actinium has 2, 8, 18, 32, 18, 9, 2 electrons in each shell.
Actinium has 89 protons and electrons; the natural isotope 227Ac has 138 neutrons.
They have different numbers of valance electrons
6 valence electrons
6 valence electrons