The mass number for the isotope 227Ac is 227.
The element that has the closest mass to 89 is Yttrium(88.91).
Actinium, with the chemical symbol Ac, is the chemical element with the atomic number 89.
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
There are 138 neutrons in actinium 89. Thank you for using WikiAnswers:)
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 is a natural chemical element, it is not a man-made element.
The first element in the actinide series is actinium , a chemical element in the periodic table that has the symbol Ac and atomic number 89.The actinide (or actinoid) series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table , with atomic numbers 89-103.The actinides get their name from the first element in the series , actinium.
The eighty ninth element in the periodic table is Actinium, with the symbol Ac and atomic number 89. It is a radioactive element that is part of the actinide series.
Actinium is a trivalent chemical element.
Actinium is a trivalent chemical element.
any nickname (and generally for the chemical elements) for actinium
Applications of actinium are: - neutron source as actinium-beryllium - radiotherapy