Name: __________________________ This exercise must be completed BY YOURSELF, and not as a group....
-
Upload
violet-campbell -
Category
Documents
-
view
215 -
download
0
Transcript of Name: __________________________ This exercise must be completed BY YOURSELF, and not as a group....
Name: __________________________
• This exercise must be completed BY YOURSELF, and not as a group. You must sign the affidavit at the bottom of this page attesting to this fact.
Please follow these instructions carefully!
• In the provided skeletal periodic table, fill in the ionic radii (“IR” column) of the elements in their typical oxidation state, and with a coordination number of 6 (VI on table). Make sure you do NOT use the covalent radii (“CR” column). Choose oxidation states as specified below:
• The typical oxidation state for the “A” group elements is their group number (+).
• The typical oxidation state for the transition metals (“B” group) is “+3”. If there is not an entry for the +3 oxidation state, use the +2 oxidation state.
• The typical oxidation state for lanthanide elements is +3. • Let’s also use +3 oxidation states for the actinides (instead of the usual +4).
Finally, answer the summary questions about the ionic radii trends.
Periodic table extra credit
I independently completed this assignment (signature): _____________________________
Atomic radii (CN 6) of common oxidation states
1A 2A
3B 4B 5B 6B 7B 8B 8B 8B 1B 2B
3A 4A 5A 6A 7A
8A
Periodic trends
• Comment on any boxes that you were unable to properly fill in.
• Comment on the relative sizes of the major classes of elements (s-block, p-block, d-block, f-block)
• Comment on the general periodic trends in ionic radii, and on the trends within the classes above
• Comment on any notable exceptions to the trends you observe
• Yttrium is often treated as a rare earth element. Based on its ionic radius, where does it fit within the lanthanide series?