diatomics - chemistry 0.0 / 5 ? ChemistryThe Periodic TableGCSEOCR Created by: tia5sosCreated on: 17-09-20 21:51 atomic number of 1 hydrogen 1 of 7 a gas that makes up 78.1% of the volume of the earths air nitrogen 2 of 7 has an electron configuration of 2,7 fluorine 3 of 7 has an atomic mass of 16 oxygen 4 of 7 used as an antiseptic iodine 5 of 7 used to sterilize water in (e.g.) swimming pools chlorine 6 of 7 atomic number 35 bromine 7 of 7
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