The thing that it is called is it is called the atomic number of the thing
True.......................................
In the year 1909, Robert A. Millikan and Harvey Fletcher performed the oil drop experiment.
<span>O2 travels slower than H2, Ne, N2, and CO. This is due to the fact that O2 has a heavier molecular weight than the others. O2 has a weight of 32 grams per mole. N2 and CO are the next highest with 28 grams per mole. Ne is 20 grams per mole, and H2 is 2 grams per mole.</span>