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Nature and formation of pure covalent, polar covalent and dative covalent bonds
Accepted Answer
Pure Covalent Bonds:
* Formed between atoms of the same element or atoms with nearly equal electronegativities.
* Electrons are shared equally between the atoms, resulting in a nonpolar bond.
Polar Covalent Bonds:
* Formed between atoms with different electronegativities.
* Electrons are not shared equally, resulting in a partial positive charge on one atom and a partial negative charge on the other.
Dative Covalent Bonds:
* Formed when one atom donates both electrons to form the bond (coordinate bond).
* The atom that donates the electrons is called the donor, and the atom that accepts the electrons is called the acceptor.
Formation of Covalent Bonds:
1. Orbital Overlap: Atomic orbitals of the participating atoms overlap to form a molecular orbital.
2. Electron Pairing: Electrons from the overlapping orbitals pair up, forming covalent bonds.
3. Bond Strength: The strength of the bond depends on the amount of orbital overlap and the number of shared electrons.
* Formed between atoms of the same element or atoms with nearly equal electronegativities.
* Electrons are shared equally between the atoms, resulting in a nonpolar bond.
Polar Covalent Bonds:
* Formed between atoms with different electronegativities.
* Electrons are not shared equally, resulting in a partial positive charge on one atom and a partial negative charge on the other.
Dative Covalent Bonds:
* Formed when one atom donates both electrons to form the bond (coordinate bond).
* The atom that donates the electrons is called the donor, and the atom that accepts the electrons is called the acceptor.
Formation of Covalent Bonds:
1. Orbital Overlap: Atomic orbitals of the participating atoms overlap to form a molecular orbital.
2. Electron Pairing: Electrons from the overlapping orbitals pair up, forming covalent bonds.
3. Bond Strength: The strength of the bond depends on the amount of orbital overlap and the number of shared electrons.
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