2. Atoms & Elements

Which of the following statements correctly describes the difference between a cation and an anion?

Which of the following happens when potassium forms an ion?

Which process leads to the formation of an anion?

Which of the following species has the same number of protons as Fe^{3+}?

In a formula unit of CoO, the total oxide ion charge is 2–. What is the charge on each cobalt ion?

Which statement is true of all atoms that are anions?

Which of the following elements tends to form anions when bonding with other elements?

Which two particles have opposite charges?

Which of the following species is isoelectronic with Ne?

The net charge on an atom of a given element changes as ______ are added or removed.

Which of the following statements correctly describes the atomic number of a cation formed when a neutral sodium atom loses one electron?

What is the charge on the nitrate ion (NO_3)?

What is the charge on a sodium ion?

Which of the following ions has ten electrons in its outermost n=2 subshell?

Which of the following best describes a cation and its typical location on the periodic table?