F.4 Introduction of covalent bonding

Watch the video via YouTube channel (5 minutes) and answer the questions below.

1. Which of the following substances are ionic compounds? (Two answers)

• LiF

• NaCl

• CO₂

• Cl₂

How many electrons are shared between two hydrogen atoms in a H₂ molecule?

• 1

• 2

• 4

• 8

How many electrons does each hydrogen atom have in a H₂ molecule?

• 1

• 2

• 4

• 8

How many electrons are shared between two chlorine atoms in a Cl₂ molecule?

• 1

• 2

• 4

• 8

How many outermost shell electrons does each chlorine atom have in a Cl₂ molecule?

• 1

• 2

• 4

• 8

The chemical bond formed between hydrogen and chlorine atoms is

• metallic bond

• ionic bond

• covalent bond

• intermolecular forces

How many electrons does the hydrogen atom have in a HCl molecule?

• 1

• 2

• 4

• 8

How many outermost shell electrons does the chlorine atom have in a HCl molecule?

• 1

• 2

• 4

• 8

What type of chemical bonding holds nitrogen and hydrogen atoms together?

• covalent bond

• ionic bond

• metallic bond

• intermolecular forces

How many outermost shell electrons does the nitrogen atom have in a NH₃ molecule?

• 1

• 2

• 4

• 8