@Ichijoe  
*clicks the joycall3’s periodic table tag*
 
… they’re right where they’ve been for a while now. I can’t imagine what filter you might have to make just those not appear.

What happened to Element’s 72 ~ 77?

@Parcly Taxel  
Yes. Apparently, not many oxidizers are known that can oxidize oxygen itself. Platinum hexafluoride is the only one I know of.

@Registered Anon Precisely because it’s a gas at room temperature (!) and oxidises oxygen, which has about the same ionisation energy as xenon.

Platinum hexafluoride was used as an oxidizer in the experiment that proved xenon can form compounds.

There is a deep connection between my OC Parcly Taxel and platinum; not only do the two share initials, Parcly’s crown and horn ring are made of platinum and the etymology of the element (little silver) is a reference to her mentor Luna (traditionally associated with silver).
 
Skip to the real uses though. Platinum is mostly used as adsorption material in catalytic converters, where carbon/nitrogen oxides and hydrocarbons are bound and made into the less harmful carbon dioxide and water vapour. It also tends to be the most effective and versatile metal for catalysts in organic chemistry, though the steep price (1 litre is around a million US dollars) has stirred the development of ruthenium and biomimetic equivalents.
 
As I’ve mentioned on iridium, the combination of the two metals defines the kilogram, but in general platinum is the answer to “I need a completely inert metal!” Pans in calorimeters and electrodes for determining standard electrode potentials both come in platinum.

@Roy-of-Asturia
 
Oh, how annoying that Trinity is…
 
Then again, maybe it’s just me hating Luna (Not to be confused with Princess Luna)

Careful with that Ingot AJ you might break a hoof if your not careful.  
Sad though the Prof cant even pick up a 13kg (28lbs) weight.

Return of The Metal Men images!  

Platinum should have been Rari-Princess Platinum. But okay.  
Best element!

The S-rank of medal metals/alloys
 
Also, 白金 (white gold)
 
Also also,  

It’s been a while since the previous image.