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Bromine dioxide
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<p>Bromine dioxide is the <a href="/facts/Chemical_compound/37FXqqtv">chemical compound</a> composed of <a href="/facts/Bromine/oLfj3C7D">bromine</a> and <a href="/facts/Oxygen/acyn6o8r">oxygen</a> with the <a href="/facts/Chemical_formula/hghUtthl">formula</a> BrO2. It forms unstable yellow to yellow-orange crystals. It was first isolated by R. Schwarz and M. Schmeißer in 1937 and is hypothesized to be important in the <a href="/facts/Atmosphere/oUpLaGRF">atmospheric</a> reaction of bromine with <a href="/facts/Ozone/o0E5gn2p">ozone</a>. It is similar to <a href="/facts/Chlorine_dioxide/1K7ybEdW">chlorine dioxide</a>, the dioxide of <a href="/facts/Chlorine/y27UwYBM">its halogen neighbor</a> one period higher on the <a href="/facts/Periodic_table/umdGIfUb">periodic table</a>. </p>