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Questions
Write the formula of the following compound:
Sodium carbonate
Write the formula of sodium carbonate.
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Solution
Na2CO3
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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.
For example:
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