Round 11: Tossup 3

Three hydrogen atoms are replaced by three atoms of this element in an acetic acid derivative to increase its Ka (“K-a”) by 34,000 times. (-5[1])A uranium compound with six atoms of this element is a byproduct of enrichment. A polymer in which each carbon is bonded to two atoms of this element is used to coat stir bars and non-stick pans. This element and hydrogen form a binary acid that can etch glass. Carbon, chlorine, and this element name a class of volatile compounds that includes refrigerants like Freon. This element has a value close to 4 on the Pauling scale, as it is the most electronegative element. For 10 points, name this lightest halogen commonly added to toothpaste. ■END■ (10[1])

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