An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reactions involved.
ScienceClass 10CBSEAnswered 27 Mar 2026
Answer
Soln:
Element A is 17 Sodium because it will burn with golden flame in air. Element B is Chlorine for its atomic number is 17.
Product C is Sodium Chloride 2Na +CL2 2NaCl
Product D is Sodium hydroxide 2NaCl+ 2H2O 2NaOH+ Cl2+H2