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Question
Write the formula of the following compound:
Potassium permanganate
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Solution
Potassium permanganate - KMnO4 - `["MnO"_4]^(1-)`
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Example 2: A low-cost model for writing formulae: Take empty blister packs of medicines. Cut them in groups according to the valency of the element, as shown in the figure. Now, you can make formulae by fixing one type of ion into other.
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