1. What is the equation for the second ionisation of oxygen?
- O+ (g) -> O2+ (g) + e-
- O+ (l) -> O2+ (g) + e- (s)
- O2+ (g) -> O3+ (g) + e-
- O2- (g) -> O2+ (g) + H2O
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2. What are three characteristics that ionic compounds have (when in a giant ionic structure)?
- always conducts electricity, low boiling point, cannot dissolve in water
- high boiling point, always conducts electricity and cannot dissolve in water
- conduct electricity when molten or dissolved, have high boiling points, dissolve in water
- dissolve in water, low boiling point, can not conduct electricity
3. What charge does the Sulfate SO4 ion carry?
4. How do the delocalised electrons in metallic bonding effect the melting point?
- The more electrons there are, the stronger the bonding will be and the higher the meling point because the positive metal ions will have more electrons to be attracted to
- Because the shared pair of electrons create a strong intermolecular force
- They make the melting point lower because it stops the positive ions being attracted togther
- They make the bonding between atoms weaker
5. What are Van Der Waals Forces?
- electrostatic attraction between temporary dipoles and induced dipoles caused by movement of electrons in atoms and molecules.
- shared pair of electrons
- any intermolecular force
- ionic attraction