Covalent Bonding Quiz

What is the definition of a covalent bond?

• A bond formed between two adjacent atoms through the sharing of valence electrons

• A bond formed between two adjacent atoms through the transfer of valence electrons

• A bond formed between two adjacent atoms through the attraction of opposite charges

• A bond formed between two adjacent atoms through the repulsion of like charges

Which of the following compounds is an example of a covalent bond?

• NaCl

• CaO

• H2O

• KBr

What is the octet rule?

• Atoms tend to gain or lose electrons to achieve a full outer shell of 8 electrons

• Atoms tend to share electrons to achieve a full outer shell of 8 electrons

• Atoms tend to repel each other when they have 8 electrons in their outer shell

• Atoms tend to attract each other when they have 8 electrons in their outer shell

What is the relationship between bond length and bond energy?

• As bond length increases, bond energy increases

• As bond length increases, bond energy decreases

• As bond length decreases, bond energy increases

• As bond length decreases, bond energy decreases

What is the formal charge of an atom in a molecule or ion?

• The charge that would reside on an atom if all bonding electrons are shared equally

• The charge that would reside on an atom if all bonding electrons are transferred

• The charge that would reside on an atom if all bonding electrons are repelled

• The charge that would reside on an atom if all bonding electrons are attracted

What is the purpose of resonance structures?

• To show the different arrangements of atoms in a molecule

• To show the different arrangements of electrons in a molecule

• To show the different arrangements of charges in a molecule

• To show the different arrangements of bonds in a molecule

Which of the following elements is the most electronegative?

• Hydrogen

• Oxygen

• Carbon

• Fluorine

What is the bond order of a covalent bond?

• The number of bonding electron pairs between the bonding atoms

• The distance between the atomic nuclei when energy is minimized

• The energy required to break a chemical bond in a gas-phase molecule

• The ability of an atom in a molecule to draw electrons to itself

Which of the following compounds exhibits resonance?

• NaCl

• H2O

• O2

• CO2

What is the best structure for N2O?

• N—O—N

• N—N—O

• O—O—N