Ionic & Covalent Bonding Review

The electrons involved in the formation of a chemical bond are called

• dipoles

• s electrons

• Lewis electrons

• valence electrons

When an ion has a positive charge, it has ______ electrons.

• lost

• gained

• shared

• none of the above

In drawing a Lewis structure, each nonmetal atom (except hydrogen) should be surrounded by

• 2 electrons

• 4 electrons

• 8 electrons

• 10 electrons

To draw a Lewis structure, one must know the

• number of valence electrons in each atom.

• atomic mass of each atom.

• bond length of each atom.

• ionization energy of each atom.

Compared with ionic compounds, covalent compounds...

• have higher boiling points.

• have lower melting points.

• conduct electricity

• are harder.

The ions in most ionic compounds are organized into a

• molecule

• Lewis structure

• polyatomic ion

• crystal lattice

In order for Iodine to become an ion, it will...

• gain an e- and become a negative ion

• lose an e- and become a negative ion

• gain an e- and become a positive ion

• lose an e- and become a positive ion

What type of bond will you find a complete transfer of electrons?

• covalent

• polar covalent

• ionic

• nonpolar covalent

What type of bond will you find a sharing of electrons?

• ionic

• covalent

• metallic

• none of the above

The following diagram shows

• covalent structure for MgF₂
• ionic structure for MgF₂
• covalent structure for Mg₂F₂
• ionic structure for Mg₂F₂