who introduced the first Periodic Table
The heaviest stable element is bismuth, atomic number 83, atomic weight 208.9804). Any heavier element is radioactive, which means it decays into lighter elements - uranium, the heaviest naturally occurring element, will eventually decay into lead-207.
The 85th element on the Periodic Table of Elements is astatine (At). It is a highly radioactive element and the heaviest known halogen. Astatine is rare and is primarily produced as a result of decay processes in uranium ores.
About 2/3 of the Periodic Table of Elements is made up of Metals.
No, carbon is not the first element on the periodic table of elements. Hydrogen is the first element on the periodic table.
NO!!! Carbon is No. 6 in the Periodic Table. Hydrogen is No. 1 in the Periodic Table.
The heaviest element in the periodic table (known in March 2013) is ununoctium.
This element is francium.
I think this is a trick question. The heaviest NATURAL element is Uranium (#92) but there are several heavier man-made ones. Every couple of years they are able to make another heavier one and IT becomes the heaviest. So I think the answer should be "there is no HEAVIEST element in the periodic table - it keeps changing."
This number you see next to the name on the periodic table is called the atomic number. It is ordered from lightest to heaviest, judging of the weight of an element's specific atom.
The heaviest stable element is bismuth, atomic number 83, atomic weight 208.9804). Any heavier element is radioactive, which means it decays into lighter elements - uranium, the heaviest naturally occurring element, will eventually decay into lead-207.
The 85th element on the Periodic Table of Elements is astatine (At). It is a highly radioactive element and the heaviest known halogen. Astatine is rare and is primarily produced as a result of decay processes in uranium ores.
At the lower right corner of the Periodic Table.
The heaviest radioactively stable element in the same column of a wide form periodic table as nitrogen is bismuth.
About 2/3 of the Periodic Table of Elements is made up of Metals.
Osmium
The heaviest (hevest?) naturally occurring element is Uranium (238 a.m.u.) but the heaviest known element is atom number 114, 117 or 118, the exact mass being unknown but over 250.
The mass of an element increases as you go down the periodic table. The heaviest discovered (synthesized) metals are in the bottom row of the transition metals group.