General Knowledge!

[BFM_JANE]

Iron?

[BFM_Kiwi]

Incorrect, but good guess.

[BFM_Xtr3me]

Hydrogen?

[BFM_Edison]

I'm pretty sure it's one of Silicon or Oxygen, thanks to stuff like Quartz.

[BFM_Kiwi]

Iron is the most abundant element in the earth's core, and source of the magnetic field.

Hydrogen is the most abundant element in the universe (hydrogen and helium are 99% of everything)

The earth's crust though is neither of those things. 

Edison made two guesses, so I'll have to pick one for him.  Sand being heavier than air, I'll choose Silicon.

No, it's not silicon.

[BFM_Nemesis]

My guess would be Oxygen.

[BFM_Edison]

Oxygen is in quartz (ie sand) as I said, so I think your decision making is suspect, you evil cheating Kiwi you. I call fowl!

[MrMxyzptlk]

Then it's gotta be Unobtainium*....



 



* And NO, James Cameron did NOT come up with that elemental name! Learn more via the link!

[BFM_Kiwi]

Neme is correct, it's Oxygen!


Ok, ok, Edison can go...   

[BFM_Edison]

What are the two elements generally considered the most massive you can create via fusion?

[BFM_Kiwi]

Uranium and plutonium?

[Moxie]

Uranium and plutonium?

[MrMxyzptlk]

Oh heck, why not:

Uranium and plutonium?

 

[jim360]

"You" as in humans or you as in the universe in general?

Palladium and Uranium?

[jim360]

Wait, we're all at totally the wrong part of the Periodic table - I think.

Nuclei higher than Iron are formed by neutron capture processes/ beta- decay chains, I believe.

So it should be any two of Iron, Cobalt, Nickel.