is there any kind of metal that does not dissolve in AR ?

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http://web.mit.edu/piuska/Public/Ekaterinburg%20more/Ekaterinburg%20research/Aqua%20regia%20-%20Wikipedia.pdf

https://chemistry.stackexchange.com/questions/67199/what-metals-arent-dissolved-in-attacked-by-aqua-regia
 
Tantalum, niobium, zirconium, hafnium titanium, even tungsten is barely attacked.

Tantalum of course the most resistant to everything but fluoride.
 
I have sulfide ore and applying aqua riga but when use
Sodium metby sulfite than i m not geeting any metal at the end
Dint know y!
 
Khanarsal said:
I have sulfide ore and applying aqua riga but when use
Sodium metby sulfite than i m not geeting any metal at the end
Dint know y!

Wrong place for your question, or is it just a statement?
 
Don't forget silver, also rhodium, iridium and platinum which are highly resistant to most acids, they do dissolve but very slowly even under high heat.
 
Khanarsal said:
I have sulfide ore and applying aqua riga but when use
Sodium metby sulfite than i m not geeting any metal at the end
Dint know y!

Either, A. you had no gold or other PM in the ore to begin with or;
B. You did it wrong.
 
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