The electron affinities of Al, Si, and P are -43, -134, and -72 kJ/mol, respectively.  Please choose all correct statements regarding the relative values of these electron affinities (there may be more than one answer).

Rhodium (Rh) crystallizes in a face-centered cubic arrangement.  Calculate the total volume of Rh atoms present in a face-centered cubic unit cell (r is the atomic radius of Rh).  

An ionic compound forms a cubic-type lattice where A ions occupy the corners of the cube and B ions occupy the centers of faces of the cube.  What is the molecular formula of the compound?   

The radii of Mg2+ and S2- are 0.86 and 1.70 Å, respectively.  Therefore, the radius ratio of MgS is   _______ , which indicate that the maximum coordination number for the magnesium cation should be _______ .  If MgS assumes a rock-salt structure (NaCl), the S2- will form a _______ lattice and Mg2+ will occupy  _______ holes.

Answer to the following questions for [Ru(NH3)6]3+ (Please write your answers on a paper and upload the image file in the Assignments): (a) Determine the CFSE for the high-spin case (Please include the electron configuration). (b) Determine the CFSE for the low-spin case (Please include the electron configuration).  (c) What is the condition when the low-spin state is favored (the condition must be supported by the results in (a) and (b))?  (d) Please predict which spin state is favored, and explain your choice based on all factors (size, charge, ligand, …) affecting the magnitude of the crystal field splitting energy of this compound.  

Name the following compound. (NH4)2[Ni(C2O4)2(H2O)2]

Please select all correct statements for the following reactions (there may be more than one answer): reaction (1)    [Ni(H2O)6]2+  +  6 NH3  →  [Ni(NH3)6]2+  +  6 H2O    reaction (2)    [Ni(H2O)6]2+  +  3 en  →  [Ni(en)3]2+  +  6 H2O

Match the 4 lobes of the brain with their functions.

Misty the horse gets excited whenever her human takes her out for a ride. Every time she goes out for a ride, her human brings out a saddle, puts it on her, and then takes her for a ride on the property. Over time, Misty starts to get excited every time she sees the saddle. In this scenario, the saddle is:

When a neuron depolarizes and sends a signal, this is called: