Which Element Has the Largest Ionization Energy?

Answer

The element that has the largest ionization energy is helium. When you look at the periodic table the top right is the highest ionization energy. The bottom left is the lowest ionization energy.
Reference:
Q&A Related to "Which Element Has the Largest Ionization Energy..."
Helium has the highest ionization energy at 24.5874. Neon is
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Helium has the highest ionization energy.
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1. Find the element's name in the alphabetical list of elements. Note the element's chemical symbol. 2. Open the chemistry reference manual to the table of ionization energies. Locate
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Fluorine has the largest ionization energy, because it has the fewest electron orbitals shielding the valence electrons from the nucleus.
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