Another REDOX question

[rinny]

I went all through those links that were posted for the other guy, but I still cant figure this shit out. Something just isnt working for me. Heres an easy question maybe someone can help me out on, and also explain to me why they are what they are:

Indicate whether each of the following substances could act as an oxidizing agent, a reducing agent, or possibly both.
a) Ba 2+
b) Co 2+
c) Se
d) Cs

I need to get this assignment done tonight, so all help is appreciated.

[turbotrip]

I believe A and B have to be Oxidizing agents because they get reduced when they gain electrons, since i dont think they can lose any more electrons

i think C and D are Reducing agents because they get oxidized

dont know whcih ones could be both...

i think A would be something like:

Ba2+ + 2e- ------> Ba


C would be something like:

Se ---------> Se2+ + 2e-

dunno about the charges i just made them up

[vadeit]

a) oxidizing agent

b) both

c) reducing agent

d) reducing agent

[rinny]

I hope its not that because i handed the assignment in that said
OA
OA
both
both

Whatever, this thread can be closed

[TEAMFaint]

What class is this? I sure hope its Chem 30 and nothing higher cause I took this stuff last year when I was in grade 11 for Chem 30