This I/GCSE Chemistry blog post will help us understand what ionic and metallic bonding is and its differences, let's go!
Ionic Bonding
Melting and Boiling points
- There are many strong bonds throughout the lattice, which need lots of energy to break and so there is a high melting point and boiling points.
Conducting Electricity
- When melted or dissolved in water, the ions are free to move around and so can carry a current when a potential is applied.
Hard substances
- The many strong bonds throughout the lattice, which each need a lot of energy (e.g.force) to break, which means that the substance is harder and stronger.
Solubility
- Water molecules are able to separate the ions from the ionic lattice, so that it breaks apart and the substance dissolves.
Metallic Bonding
Melting and Boiling points
- There is a very strong electrostatic attraction between the delocalised electrons and the cations, so lots of energy is required to break these bonds (except mercury).
Conducting Electricity
- The delocalised electrons can move throughout the giant metallic lattice and so can carry a current when a potential is applied.
Conducting Heat
- The cations are arranged in a regular arrangement touching each other. Therefore, when heated they vibrate more and their energy is easily passed through the lattice.
Malleable and Ductile
- The regular arrangment means that the layers can easily slide over each other when a force is applied.
- Insoluble
That is all for this post!
References:
https://www.google.com/url?sa=i&url=https%3A%2F%2Figcse-chemistry-2017.blogspot.com%2F2017%2F07%2F141-understand-ionic-bonding-in-terms.html&psig=AOvVaw2Wt9aQXifu6wwUwWD8wQ2W&ust=1629222140830000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCPj7mMyLtvICFQAAAAAdAAAAABAD
https://www.google.com/url?sa=i&url=https%3A%2F%2Fchem.libretexts.org%2FBookshelves%2FPhysical_and_Theoretical_Chemistry_Textbook_Maps%2FSupplemental_Modules_(Physical_and_Theoretical_Chemistry)%2FChemical_Bonding%2FFundamentals_of_Chemical_Bonding%2FMetallic_Bonding&psig=AOvVaw0WfTH7ZtN1tGJXWzFMn2-7&ust=1629222177846000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCKin_9uLtvICFQAAAAAdAAAAABAJ