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.
Unable to answer without knowing the specific isotope. However I will assume you mean actinium-227 as it is the only isotope with a halflife longer than a few days.227 protons and neutrons each composed of 3 quarks, total 681 quarks89 electronsThis gives a total of either 316 electrons, protons, and neutrons or 770 electrons and quarks. However this does not count the undeterminable number of virtual photons, muons, and gluons being exchanged by those electrons, protons, neutrons, and quarks to couple the electromagnetic, weak, and strong forces between them.
Actinium (Ac) Atomic Number: 89 Atomic Weight: 227 Protons: 89 Electrons: 89 Neutrons: 138 -----(227-89=138)
Actinium is a solid at room temperature.
No, actinium is not a metalloid. It is a radioactive metal element that belongs to the actinide series on the periodic table.
Actinium is not very soluble in water. Its solubility is extremely low, with only a small fraction of actinium ions forming in a dissolved state in water.
There are 138 neutrons in actinium 89. Thank you for using WikiAnswers:)
Actinium has 89 protons and 138 neutrons (the natural isotope 227Ac).
Actinium has 89 protons and electrons; the natural isotope 227Ac has 138 neutrons.
The natural isotope 227Ac has 138 neutrons.
The most common isotope of actinium, Ac-227, has 89 protons and 138 neutrons.
227Ac (natural actinium) has 89 protons and electrons; also 138 neutrons.
There are 2 valence electrons in Actinium.
The most common isotope of actinium, Ac-227, has 89 protons and electrons and 138 neutrons.
Each isotope has a different number of neutrons; Ac-227 has 138 neutrons.Number of neutrons = Mass number of an isotope - Atomic number of the element
Actinium has seven electron shells.
All the isotopes of actinium has 89 protons.
Actinium has seven electron shells.