Metallic Bonding

Mr. Andersen explains metallic bonding using the electron sea model, highlighting properties like conductivity, malleability, ductility, and low volatility. He discusses transition metals, their electron configurations, and how these affect melting points. The video concludes with a summary and a check on understanding the concepts.

What is the primary model used to explain metallic bonding?

• Covalent bond model

• Ionic bond model

• Electron sea model

• Molecular orbital model

Which property of metals is explained by the ability of electrons to move freely?

• Opacity

• Conductivity

• Color

• Brittleness

What does ductility in metals refer to?

• Ability to conduct electricity

• Ability to reflect light

• Ability to absorb water

• Ability to be stretched into a wire

Why do metals generally have high melting and boiling points?

• Because they are lightweight

• Due to weak attractions between atoms

• Due to their color

• Because of strong attractions between positive and negative charges

What happens to the melting point of transition metals as you move across the period from scandium to zinc?

• It remains constant

• It increases, then dips, and decreases

• It continuously decreases

• It continuously increases

Which electron configuration anomaly occurs with chromium?

• It fills the 4s before the 3d

• It skips the 4s and fills the 3d

• It does not fill the 3d at all

• It fills the 3d before the 4s

What model is used to explain the properties of metals when the electron sea model is insufficient?

• Valence bond model

• Molecular orbital model

• Shell model

• Crystal field model