An element A which is a part of common salt and kept under kerosene reacts with another element B of atomic number 17 to give a product C. When an aqueous solution of product C is electrolyzed then a compound D is formed and two gases are liberated.

(a) What are A and B?


(b) Identify C and D.


(c) What will be the action of C on litmus solution? Why?


(d) State whether element B is a solid, liquid or gas at room temperature.


(e) Write formula of the compound formed when element B reacts with an element E having atomic number 5.

(a) In the above given question element A is sodium and element B is chlorine. Because element A is a part of common salt and also kept under kerosene where as another element B has an atomic number 17.

(b) Here element C is sodium chloride and element D is sodium hydroxide.


(c) Element C will turn the litmus solution blue. Because a basic element will turn the litmus solution blue.


(d) From the above given statement we can say the element B is a gas.


(e) The formula of the compound formed when element B reacts with an element E having atomic number 5 is EB3.


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