On many Periodic Tables, the small number directly below the chemical symbol is the Atomic Mass. On mine, there is a small 12.011 under the large C for carbon. While most carbon is 12, there are naturally occurring carbon13 and carbon14, so this is an average mass of all naturally occurring isotopes, with the majority of isotopes being carbon12
Platinum has a relative atomic weight of 195.09(you will not find 5.09 anywhere else on a periodic table.)
It should already be on the periodic table.
The atomic number of potassium is 19 and the atomic weight is 39.0983 grams per mole. See the Web Links to the left for a periodic table where you can find the atomic number and atomic weight of all the elements!
Look at the Periodic Table.
periodic table
Platinum has a relative atomic weight of 195.09(you will not find 5.09 anywhere else on a periodic table.)
I can find only two types The Mendeleves Periodic table based on Atomic weight of elements and The Modern Periodic table based on Atomic number of elements.
It should already be on the periodic table.
The atomic number of potassium is 19 and the atomic weight is 39.0983 grams per mole. See the Web Links to the left for a periodic table where you can find the atomic number and atomic weight of all the elements!
Its directly under the Symbol. Example: ___________ 1 <--- atomic number 1.008 <--- atomic weight Hydrogen <--- element name ____________
Look it up in "periodic table of elements" You can find the number of a particular element by looking at the Periodic Table; you can also do this by counting the number of protons in the nucleus.
Look at the Periodic Table.
# protons = atomic number.
Look in a periodic table.
periodic table
Look at the Periodic Table.
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