1. Why is francium the biggest element with the lowest IE and EN?
Francium is the biggest element with the lowst ionization energy because Francium is the largest atom which means the valence electrons are further from the nucleous which makes it easier to lose them. Fr has the lowest electronegativity because the atom is bigger and less attractive than a smaller atom's nucleous would be, therefore the ionization energy and the electronegativity both depend upon the size of the atom.
2. Why is helium the smallest atom with the highest IE?
A helium atom has the highest ionization energy because smaller atoms have a stronger gravitational pull on electrons which makes it harder to lose valence electrons.
3. Why don't noble gases have an EN value?
Full outer shell, don not gain electrons, no charge because they gain no electrons.
4. Why does Florine have the highest EN?
F only needs one more valence electron and is a halogen. Halogens are the most reactive non-metals which makes it easier to gain the one Valence electron needed.
