1. Tardigrade
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  3. Chemistry
  4. The successive ionization energies of an element are 800, 2,000, 3,600, 25,000 and 32,000 kJ/mol. The number of valence electrons are

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Q. The successive ionization energies of an element are 800, 2,000, 3,600, 25,000 and 32,000 kJ/mol. The number of valence electrons are

Bihar CECEBihar CECE 2009

Solution:

Since there is a sudden increase in the ionisation energy after third ionisation (ie, after the removal of third electron) the number of valence electrons is $3 .$