The Total Numbers of Neutrons, Protons, and Electrons in 138Ba²⁺

Multiple Choice

The total numbers of neutrons, protons, and electrons in 138Ba²⁺ are ________.

A) 138 neutrons, 56 protons, 54 electrons
B) 82 neutrons, 56 protons, 54 electrons
C) 56 neutrons, 82 protons, 80 electrons
D) 82 neutrons, 56 protons, 58 electrons
E) 82 neutrons, 82 protons, 82 electrons