11830032
Description
Flashcards by J yadonknow, updated more than 1 year ago
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Created by J yadonknow
almost 7 years ago
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| Question | Answer |
| What is Ionic Bonding? | Electrostatic force of attraction between oppositely charged ions, forming a valence |
| What ΔEN characterises ionic bonding? | ΔEN > 1.7 |
| What sort of macroscopic structure do ions form? | Giant ionic lattice |
| Describe the melting/boiling points of ionic compounds | Most solid at RTP Boiling points relatively high Melting points relatively high |
| Why are mpt/bpt so high? | Energy required to overcome strong electrostatic forces between ions |
| What causes an increase in mpt/bpt? | Smaller ions/higher charges |
| What are ionic compounds soluble in? | Polar solvents i.e. water, break the lattice shield the ionic charges |
| What ionic compounds are relatively insoluble in water and why? | Ionic compounds with large charges may have electrostatic attractions that are too high for water to break the lattice |
| Describe the electrical conductivity of ionic compounds | Don't conduct when solid, ions are fixed in the giant ionic lattice No mobile charge carriers When melted or dissolved in water, does conduct. |
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