About: Writing a Chemical Formula   Sponge Permalink

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In the formation of a chemical compound, combinaton takes place between positive and the negative radicals in such a way that the product of valency and the number of radicals is the same for both the radicals. Thus to write the formula of a compound we proceed as follows: Let's take a few examples: Example 1. For writing the formula of sodium sulphate, proceeding as above instructions state, we have: 1. * Writing symbols side by side with valencies at the top. Na1+SO42- 2. * There being nothing common in 1 and 2, crossing the valencies we get the desired formula: Na2SO4

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  • Writing a Chemical Formula
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  • In the formation of a chemical compound, combinaton takes place between positive and the negative radicals in such a way that the product of valency and the number of radicals is the same for both the radicals. Thus to write the formula of a compound we proceed as follows: Let's take a few examples: Example 1. For writing the formula of sodium sulphate, proceeding as above instructions state, we have: 1. * Writing symbols side by side with valencies at the top. Na1+SO42- 2. * There being nothing common in 1 and 2, crossing the valencies we get the desired formula: Na2SO4
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  • In the formation of a chemical compound, combinaton takes place between positive and the negative radicals in such a way that the product of valency and the number of radicals is the same for both the radicals. Thus to write the formula of a compound we proceed as follows: 1. * Write the symbols of the two radicals side by side with valencies at the top, the positive radical to the left and negative radical to the right. 2. * Cross the valencies after removing the common factor, if any. The numbers are to be placed to the lower right of each symbol. The compound radical must be enclosed within a bracket and the number placed outside the bracket to the lower right. Let's take a few examples: Example 1. For writing the formula of sodium sulphate, proceeding as above instructions state, we have: 1. * Writing symbols side by side with valencies at the top. Na1+SO42- 2. * There being nothing common in 1 and 2, crossing the valencies we get the desired formula: Na2SO4
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