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CBSE Class 9 Answered

Write the molecular formulae of all the compounds that can be formed by the combination of following ions: Mg2+ , Cl- , SO4 2- , PO4 3- 
Asked by lkaausik | 09 Jan, 2022, 08:28: AM
answered-by-expert Expert Answer
By using Cris-Cross method, 
 
Valencies of cation and anion are reversed.
 
Mg to the power of plus 2 space end exponent space and space Cl to the power of minus space forms minus space space MgCl subscript 2
Mg to the power of plus 2 space end exponent space and space SO subscript 4 superscript negative 2 end superscript space forms minus MgSO subscript 4

Mg to the power of plus 2 space end exponent space and space PO subscript 4 superscript negative 3 end superscript space forms minus Mg subscript 3 left parenthesis PO subscript 4 right parenthesis subscript 2 space
Answered by Ravi | 10 Jan, 2022, 01:27: PM
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