Type in Periodic Table in the search bar.
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Now look for 209.
-.-
Po.
It is radium!
Bibinilium
Pb-208
Radon.
Actinium
Polonium is a metal element. Atomic mass of it is 209.
Each of the 33 isotopes of polonium has a specific atomic mass; because all the isotopes are unstable is difficult to give an atomic weight for the element. See the link.
Magnesium is a meta element. Atomic mass of it is 24.
Atomic mass is the mass of 1 mole of the element. Atomic number is the number of protons the element has
Nickel is a meta element. Atomic mass of it is 59.
Polonium is a metal element. Atomic mass of it is 209.
Polonium is a metal element. Atomic mass of it is 209.
Berilium is a non metal element. Atomic mass of it is 209.
Polonium is a metal element. Atomic mass of it is 209.
Each of the 33 isotopes of polonium has a specific atomic mass; because all the isotopes are unstable is difficult to give an atomic weight for the element. See the link.
Magnesium is a meta element. Atomic mass of it is 24.
Po
The element is Iodine (I). It has an atomic mass of about 126.9.
Po is the symbol for polonium. It was discovered by polish Chemist and Physicist Marie Curie in 1898, and she named the element in honor of her country. It has an atomic number and atomic mass of 84 and 209 u respectively.
Atomic mass is the mass of 1 mole of the element. Atomic number is the number of protons the element has
the Atomic Mass
Nickel is a meta element. Atomic mass of it is 59.