(i) Write the electron-dot structures for sodium, oxygen and magnesium.
(ii) Show the formation of Na2O and MgO by the transfer of electrons.
(iii) What are the ions present in these compounds?
What would you observe when zinc is added to a solution of iron(II) sulphate? Write the chemical reaction that takes place.
Which gas is produced when dilute hydrochloric acid is added to areactive metal? Write the chemical reaction when iron reacts with dilute
H2SO4.
Write equations for the reactions of
(i) iron with steam
(ii) calcium and potassium with water
Give an example of a metal which
(i) is a liquid at room temperature.
(ii) can be easily cut with a knife.
(iii) is the best conductor of heat.
(iv) is a poor conductor of heat.
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