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<p>the same becomes true of groups <a href="page.php?w=alkali_metals">1</a> and <a href="page.php?w=pnictogen">15</a>, assuming <a href="page.php?w=white_phosphorus">white phosphorus</a> is taken as the standard state. All of the halogens form acids when bonded to hydrogen. Most halogens are typically produced from <a href="page.php?w=mineral">mineral</a>s or <a href="page.php?w=salt_%28chemistry%29">salts</a>. The middle halogens--chlorine, bromine, and iodine--are often used as <a href="page.php?w=disinfectant">disinfectant</a>s. Organobromides</p><p>
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