Chapter 5 - Electrons in Atoms - 5 Assessment - Page 153: 56

A) Ar B) Ru C) Gd

A) Add the superscripts together in order to determine the number of electrons. This in turn will give you the atomic number of the element. B) Add the superscripts together in order to determine the number of electrons. This in turn will give you the atomic number of the element. C) Add the superscripts together in order to determine the number of electrons. This in turn will give you the atomic number of the element.