6.4 Metallic Bonds and Properties of Metals

Which of the following best describes metallic bonding?

• A) Sharing of electron pairs between atoms

• B) Transfer of electrons from one atom to another

• C) A sea of electrons shared among a lattice of metal atoms

• D) Attraction between oppositely charged ions.

In metallic bonding, the electrons are free to move around, creating a 'sea of electrons'. This is different from ionic compounds where electrons are ____.

• shared equally

• transferred completely

• localized in bonds

• free to move

What is metallic bonding characterized by?

• A) Metal cations surrounded by a 'sea' of delocalized electrons

• B) Metal anions surrounded by a 'sea' of localized electrons

• C) Metal cations surrounded by a 'sea' of localized electrons

• D) Metal anions surrounded by a 'sea' of delocalized electrons.

Metallic bonding explains properties of metals such as conductivity and _______.

• brittleness

• malleability

• transparency

• rigidity

What is the 'electron sea model'?

• A model describing the behavior of electrons in a metal

• A model describing the behavior of electrons in a gas

• A model describing the behavior of electrons in a liquid

• A model describing the behavior of electrons in a solid

Fill in the blank: A 'delocalized electron' is an electron that is not associated with a single atom or a covalent bond.

• localized

• delocalized

• stationary

• fixed

Which of the following statements is true about metallic bonds?

• A) Metals are ionic.

• B) Metals share several properties with ionic compounds.

• C) Metals do not form lattices.

• D) Metals are not attracted to particles with unlike charges.

In a metallic lattice, how many other metal atoms typically surround each metal atom?

• 4 to 6

• 6 to 8

• 8 to 12

• 12 to 16

What is the term used to describe the electrons in metals that are free to move throughout the structure?

• Localized electrons

• Delocalized electrons

• Bound electrons

• Fixed electrons

Which of the following explains the physical properties of metals at the bulk scale?

• Ionic bonding

• Covalent bonding

• Metallic bonding

• Hydrogen bonding