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Classification of Elements and Periodicity in Properties
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24/08/2021 10:50 am
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The incorrect statement among the following is
(a) the first ionization potential of Al is less than the first ionization potential of Mg
(b) the second ionization potential of Mg is greater than the second ionization potential of Na
(c) the first ionization potential of Na is less than the first ionization potential of Mg
(d) the third ionization potential of Mg is greater than the third ionization potential of Al
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24/08/2021 10:53 am
Correct answer: (b) the second ionization potential of Mg is greater than the second ionization potential of Na
Explanation:
IE2 of Mg is lower than that of Na because in case of Mg+, 3s-electron has to be removed where as in case of Na+, an electron is removed from the stable inert gas configuration which is difficult.