of~hydrogen} = \frac{mass~of~hydrogen ... is numerically equal to its relative formula mass or relative atomic mass For example, one mole of carbon is 12 g and contains 6 × 10 23 atoms of ...

The atomic number is shown below the chemical symbol, and the mass number is shown above. In this example the atomic number is 17 and the mass number is 35. This means that each of these atoms has: ...

Finding Volume—The Water Displacement Method The chart shows that atomic size and mass for the first 20 elements in the periodic table. The size of the atoms and their mass has a lot to do with the ...

Its two sources of fuel, hydrogen and lithium, are widely available in many parts of the Earth ... Fission splits a heavy element (with a high atomic mass number) into fragments; while fusion joins ...

The nucleus of each atom contains protons and neutrons. While the number of protons defines the element (e.g., hydrogen, carbon, etc.) and the sum of the protons and neutrons gives the atomic mass, ...