A: an alloy
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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
The diagram shows the apparatus used to electrolyse lead(II) bromide using inert electrodes. Why does the lamp light …
A student performs two reactions. reaction 1 10 g of magnesium ribbon with excess 2.0mol/dm³ dilute hydrochloric acid…
Which statement about catalysts is correct for a typical equilibrium reaction?