diatomics - chemistry 0.0 / 5 ? ChemistryThe Periodic TableGCSEOCR Created by: tia5sosCreated on: 17-09-20 21:51 3276145 Across 1. atomic number 35 (7) 4. has an atomic mass of 16 (6) 5. a gas that makes up 78.1% of the volume of the earths air (8) Down 2. atomic number of 1 (8) 3. used as an antiseptic (6) 6. used to sterilize water in (e.g.) swimming pools (8) 7. has an electron configuration of 2,7 (8)
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