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Frenz Cabison 1B
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Joined: Fri Sep 29, 2017 7:07 am


Postby Frenz Cabison 1B » Sat Dec 09, 2017 4:03 pm

The textbook says that,

Metals form basic oxides, nonmetals form acidic oxides; the elements on a diagonal line from beryllium toward polonium and several d-block metals form amphoteric oxides.

How do we know if a d-block metal truly forms amphoteric oxides?

Ella Bouris
Posts: 14
Joined: Thu Jul 27, 2017 3:01 am

Re: D-Blocks

Postby Ella Bouris » Sat Dec 09, 2017 6:22 pm

Here's an answer of an answer from another 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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