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9 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Bonding
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the force of attraction that brings atoms and ions together. There are two kinds of bonding; primary ( ionic covalent dative) and secondary (hydrogen)
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Ionic Bonding
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this is formed by electro statis force lf attractions between oppositely charged ions. it is the complete transfer of electrons
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Electronic transfer
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Lattice energy
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the amount of energy involved in the formation and breaking of lattice. when energy is released is more than energy required. reaction is energetically favourable.
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Characteristics of Ionic Bonds
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1. They DO NOT exist as molecules. and ARE NOT represented by a molecular formula. they have emperical formula
2. they exist in form.of crystal lattices due to strong electrostatic forces of attraction 3. high melting points 4. soluble in ionic solvents |
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Covalent Bonding
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bonds formed by sharing of electrons, are either single double or triple, can be polar or non polar
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electron sharing.
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Polar Bonds
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1. formed between 2 different atoms.
2. their♢EN is till 1.7 3. greater EN acquires partial positivity 4. are di pole 5. dissolve in polar solvents such as alcohol |
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Non polar bonds
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1. formed between two similar atoms
2. no charge 3. soluble in non polar solvents |
same atom.bonds
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Ionic Character of Covalent bonds.
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Polar covalent bonds show ionic character due to difference of EN values. they acquire partial positive or negative charges. High EN= greater power, partial negative charge. Low EN= partial negative charge
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Electronegativity
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