2. Atoms & Elements

Which of the following statements is true concerning calcium ions?

If an atom has a charge of 2+, what does this indicate about the atom?

Which of the following statements is NOT true about the Sc^{3+} ion?

When an atom loses a negatively-charged electron, it becomes a(n):

What is the most stable monatomic ion formed from lithium?

Which process causes an atom to become a cation with a positive charge?

How many magnesium ions (Mg^{2+}) are required to combine with two chloride ions (Cl^-) to form a neutral ionic compound?

Which formula represents a hydronium ion?

Which of the following best describes the difference between a cation and an anion?

How do cations form?

Which of the following best describes an atom with a negative net charge?

Which of the following ions is a cation?

If an atom of hydrogen gives up one electron, what ion is formed?

Do positive ions (cations) tend to be formed by metals or nonmetals?

What is the charge on the iron ion in Fe_2S_3?