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JEE Main 20203 SeptemberEvening Shift
Exam
JEE Main
Year
2020
Date
3 September
Shift
Evening Shift
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

JEE Main 2020 · 3 September · Evening Shift · Chemistry · Classification of Elements and Periodicity in Properties

The five successive ionization enthalpies of an element are 800,...

The five successive ionization enthalpies of an element are 800,2427,3658,3502432824kJmol–1800, 2427, 3658, 3502432824kJ{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 3rd{3}^{rd} and 4th{4}^{th} ionisation energies is high so atom contains 33 valence electrons.
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