2. Atoms & Elements

How does a sodium atom acquire a positive (+1) charge to become a sodium ion?

Which of the following ions is classified as a cation?

Which of the following ions have different numbers of electrons?

How many protons (p) and electrons (e) are found in a Sc^{3+} ion?

When water ionizes, which ions are produced?

How many electrons are present in an O^{2-} ion?

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

Which neutral atom is isoelectronic with O^{2+}?

Which of the following ions has the same electronic configuration as the noble gas neon (Ne)?

Which process leads to the formation of a cation?

Which ion is formed when an atom of fluorine (F) gains one electron?

What is the charge of an atom that has gained one electron?

How many electrons must a sulfur atom gain to achieve an octet in its valence shell?

Which type of electrical charge is carried by cations?

Which ions are present in the compound CaCl2?