B: calcium chloride
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In which of the following is there a lattice of positive ions in a 'sea of electrons'?
Element X has the electronic structure 2,8,5. Element Y has the electronic structure 2,8,7. What is the likely formul…
A covalent bond is formed by
Part of the Periodic Table is shown. The letters are not the symbols of the elements. Which statement about the eleme…
Three different beakers are set up as shown. In beaker 1 metal W is displaced from solution. In beaker 2 metal X is d…
Which gases are formed during the production of aluminium by electrolysis of molten aluminium oxide?