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JEE Main20203 Sep 2020Evening ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

The five successive ionization enthalpies of an element are 800 , 2427 , 3658 , 35024 32824 kJ mol – 1 . The number of valence electrons in the element is:

Options

  1. A5
  2. B4
  3. C3
  4. D2

Correct answer

C. 3

Step-by-step solution

As difference in 3 rd and 4 th ionisation energies is high so atom contains 3 valence electrons.

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