Electronegativity and Chemical Bonds

Electronegativity and Chemical Bonds

Predicting bond types

By knowing whether the two elements in a bond are metal or nonmetal you can predict the bond type.

Predicting bond types

As you can see if one element is a metal and one is a nonmetal it will usually form an ionic bond.

Predicting bond types

As you can see if one element is a nonmetal and the other is a nonmetal it will usually form a covalent bond.

The pink diagonal line you see is called the stair-step.

The purple left of the stair-step are metals (with the exception of hydrogen)

The green right of the stair-step are nonmetals and included hydrogen

The pink colored elements that make up the stair-step are metalloids or semi-metals

Don't worry about the value. We want the absolute value (always positive) of the difference.

Multiple Choice

Determine the type of bond that exists between the following pairs of atoms: B & P

• Ionic Bond

• Covalent

Multiple Choice

Determine the type of bond that exists between the following pairs of atoms: Li & O

• Ionic Bond

• Covalent

Multiple Choice

Determine the type of bond that exists between the following pairs of atoms: C & Na

• Ionic Bond

• Covalent

Multiple Choice

Predict the bond types of the following elements: Mg and F

• Ionic

• Nonpolar Covalent

• Polar Covalent

Multiple Choice

Predict the bond types of the following elements: Zn and Cl

• Ionic

• Nonpolar Covalent

• Polar Covalent

Multiple Choice

Predict the bond types of the following elements: N and I

• Ionic

• Nonpolar Covalent

• Polar Covalent

Multiple Choice

Predict the bond types of the following elements: B and Si

• Ionic

• Nonpolar Covalent

• Polar Covalent