Actinium has 89 protons and electrons; the natural isotope 227Ac has 138 neutrons.
There are 2 valence electrons in Actinium.
7 protons, 7 neutrons and 7 electrons
it has 44 electrons 57 neutrons and 44 protons
4 protons, 4 electrons and 6 neutrons.
The phosphorus atom has 15 protons and electrons and 16 neutrons.
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.
Actinium has 89 protons and 138 neutrons (the natural isotope 227Ac).
There are 2 valence electrons in Actinium.
18 protons 18 electrons 22 neutrons
18 protons and electrons and 22 neutrons.
Cesium has 55 protons, 78 neutrons, and 55 electrons.
61 neutrons 10 electrons 46 protons
There are 19 protons,20 neutrons, and 19 electrons.
7 protons, 7 neutrons and 7 electrons
50 electrons, 50 protons and 56 neutrons.
19 electrons, 19 protons and 20 neutrons
it has 44 electrons 57 neutrons and 44 protons