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JEE Main2017ChemistryClassification of Elements and Periodicity in PropertiesActual

The electronic configuration with the highest ionization enthalpy is:

Options

  1. AA r 3 d 10 4 s 2 4 p 3
  2. BN e 3 s 2 3 p 1
  3. CN e 3 s 2 3 p 3
  4. DN e 3 s 2 3 p 2

Correct answer

C. N e 3 s 2 3 p 3

Step-by-step solution

(i) Ionisation energy decrease with increasing atomic radius. (ii) Half filled and completely filled electronic configuration are extra stable.

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