$I E_{1}, I E_{2}$ and $I E_{3}$ of an element are 9.32, 18.21 and 153.83 eV. What information these data convey?

The element has two electron in valence shell

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The element has three electron in valence shell

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Both A and B

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None of the above

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Solution

The correct option is A The element has two electron in valence shell
The ionization potentials provide an indication about the number of valence electron (s) in an atom; the abnormally high value indicates that the electron removed is other than the valence electron.
$I E_{1}, I E_{2} a n d I E_{3}$ of an element are $9.32, 18.21 a n d 153.83 e V$ .
This shows that the element has two electron in valence shell.
Since the values shows sudden jump, it indicates that the number of valence electron in its atom is two.

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