| Zachery | Do you know what extension he's on? <a href=" http://breadandocean.com/eskalith-cr-450/ ">lithium (eskalith lithobid)</a> (Phys.org) âOfficially, the radius of a proton is 0.88 ± 0.01 femtometers (fm, or 10-15 m). Researchers attained that value using two methods: first, by measuring the proton's energy levels using hydr ... |
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