Why Francium is the biggest element with the lowest IE and EN?
Why Helium is the smallest element with the highest IE?
Why Noble Gases don't have EN values?
Why Fluorine has the highest EN?
1. Francium is the biggest element because it has 7 shells.
2. Helium is the smallest element because it has a very high ionization energy level but with an electron affinity less than zero.
3. Noble gases don't have EN values because they have full valance shells and there is no need for them to attract another atom to form a pair of bonding electrons.
4. Because from the periodic table going from left to right, it gets harder to increase the an attraction between the nuclear charge and outer electrons. So therefore across the periodic table more electronegativity energy is required to remove those electrons. And Fluorine is highest and farthest to the right.
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