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CBSE Class 9 Answered

What does the charge indicate?
Asked by Topperlearning User | 29 Mar, 2016, 04:25: PM
answered-by-expert Expert Answer

The charge indicates the valency of an ion. The valencies of ions and radicals are useful in writing the chemical formulae of the compounds.

Magnesium ion is written as Mg2+, where the 2+ charge indicates that its valency is +2.

Sulphate ion is written as SO42-, where the 2- charge indicates that its valency is -2.

Answered by | 29 Mar, 2016, 06:25: PM
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