Unit 5 Covalent Bonding Practice Test

Which of these is the correct electron-dot diagram for Cl₂ (g)? NOTE: the (g) means it is in the gas state.

• 
• 
• 
• 

Which of the following correctly matches a compound with its molecular geometry?

NOTE: there is more than one correct answer choice.

• Water (H₂O); bent

• Carbon dioxide (CO₂); trigonal planar

• Ammonia (NH₃); trigonal planar

• Methan (CH₄); tetrahedral

What is the chemical formula for disulfur decachloride?

• S₁₀Cl₂

• S₃Cl₉

• S₂Cl₁₀

• S₂Cl₈

Your lab partner drew the Lewis electron dot structure for H₂O as shown. She asks you if this structure is correct. What should you tell her needs to be changed?

• The shape of the molecule should be linear instead of bent.

• The bonds between hydrogen and oxygen should be double bonds.

• The central oxygen atom is missing some of its valence electrons.

• There should be eight valence electrons around each hydrogen.

According to the Valence Shell Electron Pair Repulsion theory (VSEPR), which of the formulas below represent a molecule with a tetrahedral molecular shape?

• 
• 
• 
• 

Name P₂O₃

• diphosphorous trioxide

• phosphorous (II) oxide

• phosphorous oxide

• diphosphorous oxide (III)

Which is the formula for carbon tetrahydride?

• C₄H

• CTeH

• (CH)₄

• CH₄

The attraction between the two iodine atoms in a molecule forms ...

• an ionic bond.

• a metallic bond.

• a covalent bond.

• a hydrogen bond.

Which of the following structures show the electrons correctly drawn? (there is more than one answer).

• 
• 
• 
• 

A compound that shares electrons between two or more nonmetals would be classified as

• covalent.

• ionic.

• metallic.