Also, I'm surprised dubnium is guessed more than dysprosium
I got some obscure ones though. As in, probably not the first thing that should come to mind.
My answers were:
Arsenic, Berylium, Calcium, Fluorine, Germanium, Helium, Iodine, Lithium, Magnesium, Nickel, Oxygen, Potassium, Radon, Sulphur, Tungsten, Uranium and Xenon.
EDIT: Sorry, after checking, it appears Livermorium has been named so before that.
So only for fluorine, oxygen, yttrium and zinc I guessed the suggested answers. (excluded the ones that only have one option)
Got very fortunate there. Miss dubnium, or whatever it was called, though. :-(