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Chemical Bonding (Ionic compound (Usually formed between metals and non…
Chemical Bonding
Ionic compound
- Usually formed between metals and non-metals
- Metals generally lose electrons and non-metals generally gain electrons
- Ionic compounds are neutral there must be the same amount of pos charges & neg charges in a compound
Crystal Lattice
- Different compounds have diff
- 3 dimensional arrangement of ions e.g sodium chloride
Octet Rule
- Noble gases are very unreactive, often called inert gases
- When bonding occurs atoms tend to reach an electron arrangement with 8 electrons in the outermost energy level
- exception- transition metals
Ion
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- Pos ions- cations
- Neg- anions
Ionic bond
- Force of attraction between oppositely charged ions in a compound
- Formed by the complete transfer of electrons from one atom to another
-
Compound
- Substance that is made up of 2 or more diff elements combined together chemically
-
- Greater than 1.7=ionic bonding
- Less than or equal to 1.7= covalent bond
- Greater than 0.4 & less than 1.7= polar covalent
- Less than or equal to 0.4= non polar
- Exceptions- H2S
