ic ▁acid , ▁leading ▁to ▁some ▁rational is ations ▁as ▁to ▁why ▁they ▁should ▁not ▁exist , ▁until ▁ 1 9 6 8 ▁when ▁the ▁an ion ▁was ▁first ▁synth es ised ▁from ▁the ▁radio active ▁beta ▁decay ▁of ▁un stable ▁. ▁Today , ▁per b rom ates ▁are ▁produced ▁by ▁the ▁ox id ation ▁of ▁al kal ine ▁b rom ate ▁solutions ▁by ▁flu or ine ▁gas . ▁Ex cess ▁b rom ate ▁and ▁flu or ide ▁are ▁precip itated ▁as ▁silver ▁b rom ate ▁and ▁calci um ▁flu or ide , ▁and ▁the ▁per b rom ic ▁acid ▁solution ▁may ▁be ▁pur ified . ▁The ▁per b rom ate ▁ion ▁is ▁fairly ▁in ert ▁at ▁room ▁temperature ▁but ▁is ▁therm od ynam ically ▁extremely ▁ox id ising , ▁with ▁extremely ▁strong ▁ox id ising ▁agents ▁needed ▁to ▁produce ▁it , ▁such ▁as ▁flu or ine ▁or ▁x en on ▁dif lu or ide . ▁The ▁Br – O ▁bond ▁in ▁ ▁is ▁fairly ▁weak , ▁which ▁corresponds ▁to ▁the ▁general ▁rel uct ance ▁of ▁the ▁ 4 p ▁elements ▁ar sen ic , ▁selenium , ▁and ▁b rom ine ▁to ▁att ain ▁their ▁group ▁ox id ation ▁state , ▁as ▁they ▁come ▁after ▁the ▁sc and ide ▁contra ction ▁character ised ▁by ▁the ▁poor ▁shield ing ▁afford ed ▁by ▁the ▁radial - n od eless ▁ 3 d ▁orbit als . ▁ ▁Organ ob rom ine ▁comp ounds ▁ ▁Like ▁the ▁other ▁carbon – hal ogen ▁b onds , ▁the ▁C