The heaviest compound that has been discovered is called Pelosium. It has an Atomic Mass of 312, with an average half-life of 2 years, and it does not decay.
ununoctium (Latin for "one-one-eight"), eka-radon
calcium phosphate [Ca3(PO4)2].
chromicloriperoxite
'FrCl' is Francium chloride. NB Francium(Fr) is the heaviest of the Group(I) [Alkali] metals. You will not find it in the open lab. because it is radioactive.
This element is ununoctium - atomic number 118; uuo is an artificial element. I suppose that you think to atomic mass and not to density.
Isotopic mas of hydrogen ia '1' Isotopic mass of nitrogen is '14' Isotopic mass of oxygen is '16' It follows that oxygen is the n=heaviest of these gases.
The heaviest natural radioactive element is Uranium.Man made elements are continuously being made. The latest heaviest superheavyweight man made element to be discovered is element 117 (it is still so new that it hasn't been given a name yet).A little different bit of information about Fermium, a team has captured a piece of its spectrum-the wavelengths of light it absorbs-making it the heaviest element ever to be so measured. It was made in the 1952 detonation of the first thermonuclear bomb. It does not make it as the heaviest element, just the heaviest to have it's light spectrum captured.
Ununhexium is the heaviest metal in the periodic table of elements. It is man made however, so it might not count. The heaviest natural metal might be Radium.
It is the An-225 with a 1.3 million pound takeoff weight it makes the worlds heaviest airplane.
He would be heavier!! (or puke)
the ocean sushine fish is the worlds heaviest bony fish
The Worlds heaviest turtke of 2008 weighs about 3 - 4 Tons
It was 6,991 pounds.
15 lbs
African elephant
anaconda
Sinead hannan from bream bay college
I think it is the Jackhammer, you know, the big ones
A horse named Sampson is the heaviest horse in the world. Sampson was a Shire horse who weighed 3,300 pounds.
The worlds heaviest hamster is 12 stone and called Robert. He currently lives with his owner Becky in Portsmouth and is fed on a diet on carrots and small children.