2. Atoms & Elements

A positive ion forms when an atom ______.

Which term describes the process whereby an atom or molecule gains or loses electrons to become an ion?

What is the charge on a chloride ion?

Which pair of ions would experience an electrostatic force of attraction between them?

How many electrons are present in a P^{2+} ion?

Which ions are present in an aqueous solution of NiCl_2?

What is a negatively charged ion called?

When an atom of magnesium (Mg) loses two electrons, which ion is formed?

What is the charge of a magnesium ion (Mg^{2+})?

Which two particles would be attracted to each other due to opposite charges?

What ions are formed when water dissociates?

Which of the following correctly identifies the cation and anion present in the compound NH4F?

When nonmetals undergo ionization, do they typically form anions or cations?

Which element forms an ion with an electron configuration of [Ne] and a -2 charge?

How are sodium and chlorine ions different from salt molecules?