Question

NaOH ka parmanviy dravyman kya hota hai yah kaise nikalta hai

Answer 1

Na ka atomic mass 23 hota hai
O ka atomic mass 16 hota hai
H ka atomic mass 1 hota hai atomic mass nikalne ke baad add kar denge
23+16+1=40
Atomic mass nikalne ke liye Atomic no. agar even no. as 2,4,6,8 10........... ho to atomic mass ke liye 2 se multiple karte hai agar odd no. as 1,3,5,7,9 ............ ho to 2 se multiple karke 1 add karenge


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