Question

i did not able to understand that how to write the formula in atoms and molecules in class 9 if i had given write a formulae of pottasium cloride then

Answer 1

hi there,
In order to write formulae who have to know the symbols of elements as well as valency of the element..if we write potassium cloride then we will first use their symbols like K for potassium and Cl for cloride and if we combine them then it will interchage their valency to form a compund..