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6 votes
2 answers
4k views

What noble metal is most resistant to oxidation by diatomic oxygen in air at room and elevated temperatures?

To clarify, by noble metals in this case I mean all platinum metals + gold, no copper, silver or rhenium. These noble metals are described as having low reactivity, but which one is least reactive or ...
wav scientist's user avatar
9 votes
1 answer
25k views

Reaction between magnesium metal and sodium hydroxide: Does this even happen?

Came across this question in a book: Among aluminum, zinc, tin and magnesium, which metals (if any) will react with an aqueous solution of sodium hydroxide to displace dihydrogen? The answer to ...
paracetamol's user avatar
  • 18.8k
9 votes
1 answer
812 views

Is ruthenium really invulnerable to aqua regia?

Recently, I answered a question "What metals aren't dissolved in/attacked by aqua regia?" in which I finally concluded "ruthenium is resistant to aqua regia in any form at any concentration of ...
Nilay Ghosh's user avatar
  • 26.3k