I2 (Iodine) Br2 (Bromine) Cl2 (Chlorine) F2 (Fluorine) O2 (Oxygen) N2 (Nitrogen) H2 (Hydrogen)
These can be easily remembered from the phrase "I Bring Clay From Our New House."
Di`a*tom"ic (?), a. [Pref. di- + atomic.] Chem. (a)
Containing two atoms.
Having two replaceable atoms or radicals.
© Webster 1913.
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