how to know what is exact forumula any trick if anyone have please shere it.
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yes for me how I work on it is that first you should know the formula of each and and every element and then u for eg:-u know the formula of chromil and chloride and u can easily write it
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hope it helps
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according to u what would be the formula in figure
CRO2CL2
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cromyll is equal to cr02
yes
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