Question

An element ‘X’ is stored in kerosene, and cannot be extracted from its ore using a reducing agent. ‘X’ forms an ionic compound on reaction with chlorine.

1. Can we store ‘X’ in water? Give reason to support your answer.
2. Identify element ‘X’. Name the process used and write the equation for extraction of ‘X’ from its ore.

Answer 1

1. No, we cannot store ‘X’ in water because it reacts vigorously with water, producing hydrogen gas and heat, which can lead to fire or explosion.
2. Element ‘X’ is sodium (Na). It is stored in kerosene, as it is highly reactive. Sodium cannot be extracted using a reducing agent because it is highly electropositive; it is extracted by electrolysis of fused sodium chloride.
   \[\ce{2NaCl ->[Electrolysis] 2Na_{(l)} + Cl2_{(g)}}\]