Ionic and Metallic Bonding

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions, typically between a metal and a nonmetal.

Front

What is a metallic bond?

Back

A metallic bond is a type of chemical bond that occurs between metal atoms, characterized by a 'sea of electrons' that are free to move, allowing for conductivity and malleability.

Front

What is the primary difference between metallic and ionic bonds?

Back

The primary difference is that metallic bonds involve movement of electrons among metal atoms, while ionic bonds involve electron transfer between atoms, creating charged ions.

Front

Why do metals have high melting points?

Back

Metals have high melting points due to the strong metallic bonds formed by the attraction between positively charged metal ions and the delocalized electrons.

Front

What factors affect the strength of ionic bonds?

Back

The strength of ionic bonds is affected by the charges of the ions and the distance between them; higher charges and shorter distances result in stronger bonds.

Front

What is the significance of the electron sea model in metallic bonding?

Back

The electron sea model explains how metal atoms share their valence electrons, allowing them to conduct electricity and heat, and providing malleability and ductility.

Front

How does the number of valence electrons affect the melting point of metals?

Back

Metals with more valence electrons typically have higher melting points because they form stronger metallic bonds.

Front

What is the relationship between ionic charge and bond strength in ionic compounds?

Back

In ionic compounds, a higher ionic charge leads to a stronger bond due to increased electrostatic attraction between the ions.

Front

Why is NaCl a good conductor of electricity in molten state?

Back

NaCl is a good conductor of electricity in molten state because the ions are free to move, allowing them to carry an electric current.

Front

What is the melting point of perovskite (CaTiO4) and why is it significant?

Back

The melting point of perovskite is 1980°C, which is significant due to the strong electrostatic attractions between the ions that hold them closely together.