d-block elements

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Samantha Joseph 1F
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Joined: Fri Sep 29, 2017 7:04 am
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d-block elements

Postby Samantha Joseph 1F » Sun Dec 03, 2017 4:21 pm

Why is it that certain elements of the d-block can form amphoteric oxides? Are their oxidation states any form of determinants?

Emily Oren 3C
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

Re: d-block elements

Postby Emily Oren 3C » Sun Dec 03, 2017 6:34 pm

I found a past post that might help:

"Re: particular d-block metals form amphoteric oxides?
Postby Chem_Mod » Sun Aug 21, 2011 10:46 am

We covered metal oxides and hydroxides (e.g., NaOH) which are basic compounds. We also covered non-metal oxides (e.g., H2SO4, H3PO4, etc.,) which are acidic compounds. The metalloids (diagonal band between metals and nonmetals) form amphoteric compounds, that is they can act like an acid or base. Some transition metals are also amphoteric but it depends on their oxidation state. We only covered transition metals which act as an acid (high + charge density). Don't worry about the other oxidation states for d-block metals."

I think this means that the answer is yes, some d-block elements can form amphoteric oxides due to their various oxidation states, but that we don't need to know that for this class.


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