Pt. 1: The halogens : Introduction to the halogens -- Fluorine: corrosive, toxic, and remarkable -- Chlorine: from table salt to safe swimming -- Bromine: unusual at room temperature -- Iodine and astatine: so alike yet so different -- Pt. 2: The noble gases : Introduction to the noble gases -- Helium: from balloons to lasers -- Neon: known for its glow -- Argon -- Krypton and xenon -- Radon: a common menace.
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