1. Tardigrade
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  3. Chemistry
  4. The table gives the first four ionization energies in kJ mol- 1 of four elements (the letters are not the symbols for the elements). Which element occurs in Group 13 of the periodic table?

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Q. The table gives the first four ionization energies in $kJ \, mol^{- 1}$ of four elements (the letters are not the symbols for the elements). Which element occurs in Group 13 of the periodic table?

NTA AbhyasNTA Abhyas 2022

Solution:

After losing three electrons in element R, there is sudden huge increase in IE from 2751 to 11584 kJ/mol. It means that after three electrons, some stable configuration is achieved. This is applicable to group 13 elements with outer configuration of $ns^{2}np^{1}$ .