2. Atoms & Elements

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?

How many electrons are present in a Na^+ ion?

Which of the following elements is most likely to form a cation?

For most atoms, how many electrons are needed in the outermost shell to achieve a stable (noble gas) electron configuration?

Which of the following best describes how ions differ from atoms?

An indium ion with a charge of -3 is formed. How many protons and electrons does this ion have?

Which of the following chemical equations correctly represents the second ionization of calcium?