2. Atoms & Elements

Which process must an atom undergo to become a negative ion?

Which type of elements typically form anions?

Which of the following ions has a positive charge?

Which of the following actions would convert a carbide ion (C^{4-}) into a neutral carbon atom?

Which of the following correctly describes a positive ion and a negative ion?

When a Mg^{2+} ion becomes a Mg atom, the radius increases because the Mg^{2+} ion:

What occurs when a magnesium atom becomes a magnesium ion?

After the transfer of the electron, sodium will form an ion with __________.

If an element gives away an electron, what type of ion does it form?

If an unknown monatomic ion has a 3- charge and contains 10 electrons, what is the identity of the ion?

Which ions are present in the compound Na2SO4?

Which of the following best describes a positive ion?

What is the charge of a single chloride ion?

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

Why do atoms gain or lose electrons?