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NTA Abhyas JEE Main2020ChemistryClassification of Elements and Periodicity in PropertiesPractice

Which one among the following ions, is smallest in size

Options

  1. AN 3 -
  2. BO 2 -
  3. CF -
  4. DN a +

Correct answer

D. N a +

Step-by-step solution

N a + < F - < O 2 - < N 3 - , All are isoelectronic species, hence effective number charge is highest for N a + so it has smallest size.

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