2. Atoms & Elements

Sulfur can form ions with a -2 charge. Is this ion classified as a cation or an anion?

Which of the following is the most stable monatomic ion formed from aluminum?

Which of the following represents the composition of the ion typically formed by fluorine?

When MgBr_2 is dissolved in water, how many ions are produced from one formula unit?

What is the charge on the Cr ion in the ionic compound Cr_2O_3?

Which of the following ions is isoelectronic with Ne?

Which of the following ions is isoelectronic with xenon?

When electrons are removed from the outermost shell of a calcium atom, the atom becomes:

How are anions formed?

Which of the following ions will act as a weak base in water?

To become positively charged, an atom must:

Which of the following describes what an atom typically does to form a stable ion?

What happens to an atom when it loses an electron?

What is the charge on a hydronium ion (H_3O^+)?

When an atom of calcium loses two electrons, what is the resulting charge on the calcium ion?