Predict what state fluorine is in at room temperature and pressure.
Complete the dot-and-cross diagram to display the electron arrangement in one fluorine molecule. Show outer shell electrons only.
Write a chemical equation for sodium reacting with fluorine.
Explain why chlorine fails to react with aqueous sodium fluoride.
(i) What is the formula of lead(II) fluoride? (ii) What type of bonding occurs between the atoms in tetrafluoromethane? (iii) What type of structure does solid lead(II) fluoride have? (iv) Explain, in terms of attractive forces between particles, why lead(II) fluoride has a much higher melting point than tetrafluoromethane. In your answer refer to the types of attractive forces between particles and their relative strengths.
(i) What does the term unsaturated mean? (ii) Describe a test that shows tetrafluoroethene is unsaturated. (iii) Draw the structure of one molecule of tetrafluoroethene. Show all atoms and all bonds. (iv) Draw one repeat unit of poly(tetrafluoroethene). Show all atoms and all bonds. (v) Deduce the empirical formula of: tetrafluoroethene; poly(tetrafluoroethene).