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Which one of the halogen with the lowest ionization energy

Which one of the halogen with the lowest ionization energy

Grade:12

3 Answers

abhishek
33 Points
6 years ago
Which has the lowest ionization energy Iodine and it has the largest size has the lowest ionization energy
gauri dixit
24 Points
6 years ago
I.E. depends on the size of atom.As small is the atom more energy is required to free the valence electron and vice-versa.
therefore largest sized atom has lowest IE. Hence answer is iodine
somnath
38 Points
6 years ago
Acc. to the question ASTATINE has the lowest ionization energy among halogen. All halogens have seven valence electrons, but as the atomic size increases, the attraction between the nucleus and these outer electrons decreases. The largest halogen atom is astatine. 
 
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