▁Art ist : ▁Wil ma - S id r ▁" K amen ▁R ider ▁E ternal " ▁ending ▁theme ▁▁▁ ▁L yr ics ▁and ▁Com position : ▁M its uru ▁M ats u oka ▁ ▁Art ist : ▁S OP H IA ▁ ▁References ▁ ▁External ▁links ▁ ▁K amen ▁R ider ▁W ▁Returns ▁official ▁website ▁ ▁K amen ▁R ider ▁W ▁Returns ▁official ▁Twitter ▁profile ▁ ▁W ▁Returns ▁Category : T ele vision ▁spin - offs <0x0A> </s> ▁Pot ass ium ▁hex a flu or oc u pr ate ( III ) ▁is ▁an ▁in organ ic ▁comp ound ▁with ▁the ▁chemical ▁formula ▁K 3 C u F 6 . ▁It ▁is ▁a ▁green ▁param agnet ic ▁solid , ▁a ▁relatively ▁rare ▁example ▁of ▁a ▁co pper ( III ) ▁comp ound . ▁ ▁Syn thesis ▁and ▁structure ▁The ▁comp ound ▁is ▁prepared ▁by ▁ox id izing ▁the ▁mixture ▁of ▁pot ass ium ▁ch lor ide ▁and ▁cu pr ous ▁ch lor ide ▁with ▁flu or ine : ▁▁ 3 ▁K Cl ▁+ ▁Cu Cl ▁+ ▁ 3 ▁F 2 ▁▁ ▁→ ▁▁▁ ▁K 3 C u F 6 ▁ ▁+ ▁▁ 2 ▁Cl 2 ▁A ▁variety ▁of ▁analog ues ▁are ▁known . ▁The ▁comp ound ▁react s ▁with ▁water ▁easily , ▁producing ▁o xygen ▁and ▁co pper ( II ) ▁products . ▁ ▁See ▁also ▁Cu pr ate ( III ) ▁ ▁References ▁ ▁Category : Co pper ▁comp ounds ▁Category : P ot ass ium ▁comp ounds ▁Category : F