suppose in aluminium ,if we try take out all the electrons in the outer shell to make the elenent achieve its elctronic configuration ...then what will be the ionisation enthalpy os 3 electrons...greater

1. The electronic configuration of Aluminium is as follows:


2. The ionisation enthalpies are as follows:

     1st = 577.5 kJ/mol
    2nd = 1816.7 kJ/mol
     3rd = 2744.8 kJ/mol

3. There is a consistant increase in the  ionisation enthalpies. This is because, as one electron is removed, the effective nuclear charge becomed more stronger on the other electrons, thus their removal becomes more difficult. So, we require a higher amount of ionisation enthalpy to remove another two electrons.

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