Periodic Table Trends

Ionization Energy (I.E.) generally increases across a period from left to right. However, the I.E. of aluminum does not follow this trend and is lower than that of magnesium. Using the valence shell electronic configuration of Mg and Al, explain why this exception occurs. Clearly justify your answer.

Periodic Table Trends

Electron affinity (E.A.) generally becomes more negative across a period, from left to right. However, the E.A. of phosphorus does not follow this trend and is less negative than that of silicon. Using orbital diagrams showing the valence electronic configuration of Si and P, explain why this exception occurs. Clearly justify your answer.

Periodic Table Trends

1a) Does the reaction of a main-group non metal oxide in water produce an acidic or a basic solution? Write a balanced equation for the reaction of an upper Group 16 nonmetal oxide with water 1b) Does the reaction of a main-group metal oxide in water produce an acidic or a basic solution? Write a balanced equation for the reaction of a Group 2 (except Be) metal oxide with water.

Bonding in coordination chemistry

[Co(h20)6]3+ will oxidize water [Co(Nh36]3+ is stable in aqueous solution How is this possible? Both are mondentate ligands. I thought the proximity of the nitrogens after one has bonded to the cobalt would make it more likely to react, because the entropy would be lowered.They are also both low spin complexes

Bonding in coordination chemistry

Why do square planar geometries occur in d7, d8, and d9 ions with strong field- pi acceptor ligands, except in cases in which ligand geometry requires it?