Polonium
It is about Cf element. it is in the !8th group.
It is the 117th element called Ununseptium. It is artificially synthesized. So heaviest naturally occurring halogen is Astatine.
Polonium is the element in group 16 that has unstable isotopes. It is a radioactive element with no stable isotopes.
The heaviest element announced in February 2004 was ununpentium with the atomic number 115.
Now californium is considered as the heaviest naturally occurring chemical element.
This element is francium.
Down the group the density generally increases. Thus radon will be the heaviest element.
It is about Cf element. it is in the !8th group.
Uranium has the heaviest atoms out of these three elements. It is a radioactive element with atomic number 92 and a relatively high atomic mass.
It is the 117th element called Ununseptium. It is artificially synthesized. So heaviest naturally occurring halogen is Astatine.
Mercury is the heaviest element at a liquid state.
The heaviest radioactively stable element in the same column of a wide form periodic table as nitrogen is bismuth.
Polonium is the element in group 16 that has unstable isotopes. It is a radioactive element with no stable isotopes.
The heaviest element in the periodic table (known in March 2013) is ununoctium.
The heaviest element that is highly radioactive is Ununoctium, which has an atomic number of 118.
Oxygen is the element having atomic number 8. It is present in group-16.
Oxygen, the upper one in group 16