Question

8-7 Why is the first ionization energy for phosphorous higher than the first ionization energy for sulfur even though the general trend in the periodic table is to have the ionization energy increase as you go from left to right on the table. 8-8 The three most common oxidation states for Fe are +2, +3 and +6 what are the most likely electronic configurations for these three ions? 8-9 Why do transition metals have magnetic properties? 8-10 Just looking at the periodic table, answer the following questions As you go down the periodic table, do the following properties get larger or smaller Atomic radius lonization energy Electron Affinity

Answer 1

Ano (8-7) P=15 = 15²2 20635² 3p3 s=16 = 15²2² 20635² 3p4 § 2 tonuation Energy is the E beeuired to remove the most loosely bound loutermost electron). In care of is P, the last é has to be removed from haly filled 3p subshell, which is stable. Whereas in the care of 16s, the removal of è from 3p4 will lead to a more stable 3p3, (8-8) ,,Fe = [Ar] 3d%4s? Fetz = CAr]3db Fe = Car] 305 → Most Stable Oxidation state of fe. Fe +6 = ig Car] 3d² 8-9) Transition metals (d-block elements) have magnete properties by writue of presence of unpaired elections in them. An unpaired é is regarded as a miero magnet which has a definite magnetic moment. Ungaried é when placed in a magnetic field, this interas with the applied field...

(8-10) We move from top to bottom in a penodic table (A) Atomie radius Inereares - Because of addition of a new shell (B) Ionuation E Decrearest és tend to be farther away from C nucleus & hence become loosely bound (c) Election Affinity Decreases tes are placed in a higher te leuel far from the nucleus thereby decreasing its pull