Covalent Exam

How are atoms held together in covalent bonds?

• By gaining and losing electrons

• By sharing electrons

Which of the following has the highest melting point as a result of being an ionic compound?

• O₂

• F₂

• Na₂O

• CCl₄

Tags

NGSS.HS-PS1-3

Ethane is C2H6; it is made entirely of C-C and C-H bonds. What type of bonding is present in this molecule?

• Ionic

• Polar Covalent

• Non-polar covalent

• Metallic

What types of elements combine to form ionic bonds?

• Metals and metalloids

• Metals and non metals

• Non metals only

• Metalloids only

• Metals only

When diatomic fluorine creates a molecule, what type of bond is used? (Hint, you may have to draw the Lewis structure)

• Single bond

• Double bond

• Triple bond

What are atoms used to complete an octet but not used in bonding called?

• Shared pair

• Lone pair

• Bonded pair

Which of the following is NOT one of the seven diatomic molecules?

• Hydrogen

• Carbon

• Bromine

• Iodine

• Oxygen

When diatomic nitrogen creates a molecule, what type of bond is used? (Hint, you may have to draw the Lewis structure)

• Single bond

• Double bond

• Triple Bond

What type of bond will N - H form?

• Polar Covalent

• Non-polar Covalent

• Ionic

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What shape will the molecule BH3 take on?

• Bent

• Trigonal Planar

• Trigonal Pyramidal

• Tetrahedral