Which of the following salt is known as washing soda? — s Block Elements Chemistry Question

💡 Solution & Explanation

Step 1: Washing soda is the common name of the hydrated crystalline form of sodium carbonate. Step 2: The decahydrate form contains exactly ten molecules of water of crystallization. Step 3: This corresponds to the chemical formula Na2CO3 . 10H2O, which matches option (c).