Unit 05: Chemical Bonding Review

What type of bond is characterized by the transfer of electrons from one atom to another?

In the compound MgCl2, which element loses electrons?

• Mg

• Cl

• O

• H

What is the electronegativity difference for ionic bonds?

• 1.7

• 0.5

• 3.0

• 2.5

Electronegativity is a measure of an atom's ability to attract electrons in a bond.

• True

• False

Provide an example of a molecule that contains polar bonds but is a nonpolar molecule overall.

• Water (H2O)

• Carbon dioxide (CO2)

• Ammonia (NH3)

• Methane (CH4)

The shape of ammonia (NH3) due to the lone pair on nitrogen is:

• Linear

• Trigonal planar

• Tetrahedral

• Trigonal pyramidal

The purpose of Lewis Dot Structures is to:

• show the arrangement of electrons in a molecule

• predict the color of a compound

• determine the melting point of a substance

• calculate the molecular weight

This image shows the bonding between Lithium and Fluorine. What does the red arrow show?

• electrons being shared

• electrons being transferred to Fluorine

• electrons being transferred to Lithium

• electrons being destroyed