In the nucleus of element 89, there are 89 protons and 138 neutrons, and the charge is positive. The protons in the nucleus carry positive charges and the neutrons have neutral charges. There are 89 electrons that orbit the nucleus, which are negatively charged.
In Coulomb, the electric charge of one proton is +1.6 x 10-19. With this information, the positive charge of actinium given in Coulombs is 89 x (+ 1.6 x 10-19).
The name of element 89 is actinium, and its atomic weight is 227 atomic mass units. Actinium is a rare earth metal that is found in small quantities in uranium ore. Its density is 10.07 grams per centimeter, and it has a melting point of approximately 1,922 degrees Fahrenheit.
