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What are isoelectronic ions? Account for the decrease in size of following species oxide ion > Fluoride ion > sodium ion > magnesium ion.

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asked Aug 20, 2017 in Chemistry by Kundan kumar (49,132 points) ● 34 ● 381 ● 1019

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answered Aug 20, 2017 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 21
selected Aug 20, 2017 by Kundan kumar
 
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The ions having same number of electrons are called isoelectronic ions. The above order is due to increasing order of effective nuclear charge.

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