2. Atoms & Elements

Which type of elements typically form anions?

When forming a compound, sodium loses electrons. What is the resulting charge on the sodium ion?

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

What is the charge of an atom with 15 protons and 18 electrons?

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?