Question

or the anion The negative charge in the first anion is delocalized over the five C atoms via resonance. The second anion has (i) or resonance, but the charge remains localized. Problem 6.65 PERIODIC ELEMENTS TABLE OF THE Table of Selected Radioactive Isotopes Satectad Radicaton radicactve in anciber incre l l Ge 67 (7 2 Po minules, hours, dans - 3a y 235 nas 23 1 e e taotopes known to ts 275 d EC 17 15elgry Ne mudes) ot d oecal mode a icle ewissaon EC on) emiaaion 125 e10 on e Je 140 128 di i HA spontaneous fasion 135 02 EC 140 IVB 9.01218 よ 12810 に 142 iPINN ade 24 (143 d (83.80 d) N as Pm145 6 Ro 14 222-1 248 3 S10 Me 9 * :

the is the answer key but i dont understand why hexagon charge remain localized and pentagon charge is delocalized

also could u explain electron donor vs electon withdraw?