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Arrange each pair of ions in order of in...

Arrange each pair of ions in order of increasing ionic radius :
`(a) Mg ^(2+) and Al ^(3+) (b) O ^(2-) and S ^(2-) (c )O^(2-) and F ^(-)`

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`(a) Al ^(3+) lt Mg ^(2+) (b) O ^(2-) lt S ^(2-) (c ) F ^(-) lt O ^(2-)`
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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -PRACTICE PROBLEMS
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