ers ▁Category : N iger ia ▁international ▁football ers ▁Category : Peter borough ▁United ▁F . C . ▁players ▁Category : Sk eg ness ▁Town ▁A . F . C . ▁players ▁Category : Que ens ▁Park ▁R angers ▁F . C . ▁players ▁Category : Hol be ach ▁United ▁F . C . ▁players ▁Category : English ▁Football ▁League ▁players ▁Category : Associ ation ▁football ▁for wards <0x0A> </s> ▁Tell urop y ry li um ▁is ▁an ▁a rom atic ▁heter oc yc lic ▁comp ound ▁consisting ▁of ▁a ▁six ▁member ▁ring ▁with ▁five ▁carbon ▁atoms , ▁and ▁a ▁posit ively ▁charged ▁tell ur ium ▁atom . ▁Der iv atives ▁of ▁tell urop y ry li um ▁are ▁important ▁in ▁research ▁of ▁inf ra red ▁d yes . ▁ ▁N aming ▁and ▁number ing ▁Form er ly ▁it ▁was ▁named ▁tell ur apy ry li um . ▁ ▁However ▁this ▁is ▁mis leading , ▁as ▁" t ell ura " ▁indicates ▁that ▁tell ur ium ▁subst it utes ▁for ▁carbon ▁atom , ▁but ▁actually ▁tell ur ium ▁is ▁subst it uted ▁for ▁the ▁o xygen ▁atom ▁in ▁py ril ium . ▁In ▁the ▁H ant z sch - W id man ▁ ▁system ▁it ▁is ▁called ▁tell ur in ium . ▁This ▁is ▁the ▁name ▁used ▁by ▁Chem ical ▁Abstract s . ▁Rep lacement ▁nom en cl ature ▁would ▁call ▁this ▁tell ur oni ab enz ene . ▁ ▁Number ing ▁in ▁tell urop y ry li um ▁starts ▁with ▁ 1