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chem: move dative bonds

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eggy 2020-10-28 17:52:08 -04:00
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@ -409,14 +409,12 @@ Whether a covalent bond is **pure** or **polar** indicates how evenly the shared
- A pure covalent bond has both nuclei attracting the valence electrons fairly evenly, so the difference in electronegativity (ΔEN) is low. - A pure covalent bond has both nuclei attracting the valence electrons fairly evenly, so the difference in electronegativity (ΔEN) is low.
- A polar covalent bond has both nuclei attracting the valence electrons unevenly, so the ΔEN is high. - A polar covalent bond has both nuclei attracting the valence electrons unevenly, so the ΔEN is high.
Sometimes, one atom in a covalent bond may contribute both electrons in a shared pair. This bond is called a **dative** bond, and is represented in Lewis structures as a double bond.
### Bonding capacity ### Bonding capacity
The **bonding capacity** of a non-metal describes the number of covalent bonds it can form. The **bonding capacity** of a non-metal describes the number of covalent bonds it can form.
### Dative covalent bonds
Sometimes, one atom in a covalent bond may contribute both electrons in a shared pair.
## 4.3 - Covalent structures ## 4.3 - Covalent structures
### Formal charge ### Formal charge