I have to fill in the blanks of these questions with the elements H (hydrogen), Co (cobalt), Ga (gallium), and O (oxygen), but different sources are telling me different things:
7. Its most common oxidation state is -2
8. A metal with more than one oxidation state
9. Metal with an oxidation number of +3
10. Has oxidation numbers of +1 and -1
Does anyone know which element goes with which criteria? Any help is greatly appreciated! :D
I hope those different sources are not from this forum
I have to fill in the blanks of these questions with the elements H (hydrogen), Co (cobalt), Ga (gallium), and O (oxygen), but different sources are telling me different things:
7. Its most common oxidation state is -2
Most likely oxygen. -2 is most common but it does have -1 in peroxides and -1/2 in superoxides.
8. A metal with more than one oxidation state
Most likely Co since +2 and +3 are common. H and O don't count as answers since they are not metals. So it must be between Co and Ga and Ga is +3. Other oxidation states of Ga are not common.
9. Metal with an oxidation number of +3
Most likely Ga. See 8 above.
10. Has oxidation numbers of +1 and -1
H must go here. +1 is the more common oxidation state but -1 is present in hydrides.
I would take these answers to the bank. :-)
Thanks so much!!!! :D
To determine which element goes with each criterion, we can use our knowledge of the periodic table and the common oxidation states of the elements mentioned (H, Co, Ga, and O).
Let's go through each criterion:
7. Its most common oxidation state is -2
Based on the periodic table, we know that oxygen (O) commonly has an oxidation state of -2. Oxygen readily gains two electrons to achieve a stable, filled electron shell.
8. A metal with more than one oxidation state
Among the elements listed, cobalt (Co) is a transition metal known to have multiple oxidation states. Cobalt can have oxidation states ranging from -3 to +3 and beyond.
9. Metal with an oxidation number of +3
Among the elements listed, gallium (Ga) has an oxidation state of +3. Gallium is a post-transition metal that typically loses three electrons to achieve a stable electron configuration.
10. Has oxidation numbers of +1 and -1
Hydrogen (H) is the element that has oxidation numbers of +1 and -1. Hydrogen can either gain one electron to have an oxidation state of -1, as in hydrides, or lose its one electron to have an oxidation state of +1, as in acids.
So, the element that corresponds to each criterion is:
7. O (oxygen)
8. Co (cobalt)
9. Ga (gallium)
10. H (hydrogen)
Remember, these are general guidelines, and there can be exceptions and variations in the oxidation states of elements depending on specific compounds and contexts.