not at all . . . you still haven't displayed the third element .. hint: .. it has nothing to do with matter or energy
Science knows currently of around 118 elements (including artificial ones generated fleetingly in labs under extreme conditions).
As Dr Adequate points out the third element in Atomic Number order is Lithium - a white silvery alkali metal that is highly reactive and never found in free atomic form in nature but in compounds instead.
Is this what we are 'scared of' - reactive lithium metal? Science knows of no other specific 'third element' so it sounds to me like a case of "You're making shit up".
By the way - just out of courtesy so you know who you are debating on EvC, many of the people on here are actual practising professional scientists with decades of experience in their various fields. We have on this site, theoretical physicists, archaeologists, geneticists, geologists, mathematicians ...hell the list goes on and on.
They can also tell simply from the way you phrase a sentence (as I can - though I'm not a practising scientist) that you are certainly not one yourself - it stands out a mile!
A little humility will go a long way here. Remember the old adage: "Best to keep one's mouth shut and be thought a fool, than open it and remove all doubt".