Question

A particular atom has 58 protons and 82 neutrons. what are the atomic number, mass number, and periodic table symbol of this isotope?

Answer 1

The answers are name: Cerium, symbol: Ce, atomic number: 58, and atomic mass: 140.110

Answer 2

Atomic number: 58

Mass number: 140

Periodic table symbol: Ce

Step-by-step explanation:

Remember that the number of protons is equal to the number of electrons and that is what determines what element is each atom, so for example the Atomic number will be determined by the number of protons or electrons, since in the example it has 58, that would be the atomic number, the mass number is the sum of the protons and the neutrons, in this cas it would be 28+82=140, and the periodic table symbol for the element with 58 as the atomic number is Ce and its called Cerium.