2. Atoms & Elements

A positively charged ion has one or more __.

What is the charge on a sodium ion (Na^+)?

An atom or a molecule with either a positive or negative charge is called a(n):

Which statement best describes the species XO_2^- that is dissociated from HXO_2 in aqueous solution?

Why does sodium form a +1 charge when it becomes an ion?

Nonmetallic elements form ions by doing which of the following with their valence electrons to complete their outer shell?

What happens when metals lose electrons and become cations?

How many protons are present in an ion that has 86 electrons and a −1 charge?

Which of the following elements is most likely to form an anion?

What are the charges on the copper and phosphide ions in the compound Cu3P?

How many total electrons are present in a Ba^{2+} ion?

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

Which of the following statements is false?

Which of the following ions is classified as a cation?