▁and ▁good ▁orb ital ▁overlap ▁between ▁heter o at oms ▁in ▁neighbor ing ▁don or ▁mole cules . ▁ ▁These ▁properties ▁help ▁the ▁final ▁salt ▁conduct ▁electrons ▁by ▁sh utt ling ▁them ▁through ▁the ▁orb ital ▁vac an cies ▁left ▁in ▁the ▁don or ▁mole cules . ▁ ▁All ▁Be ch ga ard ▁sal ts ▁have ▁a ▁variation ▁on ▁a ▁single ▁t etr ath ia ful val ene ▁mot if — d ifferent ▁super con duct ors ▁have ▁been ▁made ▁with ▁append ages ▁to ▁the ▁mot if , ▁or ▁using ▁a ▁t et ras el ena ful val ene ▁center ▁instead ▁( which ▁is ▁a ▁related ▁comp ound ), ▁but ▁all ▁bear ▁this ▁general ▁struct ural ▁similarity . ▁ ▁There ▁are ▁a ▁wide ▁range ▁of ▁other ▁organ ic ▁super con duct ors ▁including ▁many ▁other ▁charge - trans fer ▁complex es . ▁ ▁See ▁also ▁ ▁Super con duct ivity ▁ ▁T etr ath ia ful val ene ▁ ▁References ▁ ▁Category : Super con duct ivity ▁Category : Organ ic ▁comp ounds <0x0A> </s> ▁Bern oul li ' s ▁triangle ▁is ▁an ▁array ▁of ▁partial ▁sums ▁of ▁the ▁bin omial ▁coefficients . ▁For ▁any ▁non - negative ▁integer ▁n ▁and ▁for ▁any ▁integer ▁k ▁included ▁between ▁ 0 ▁and ▁n , ▁the ▁component ▁in ▁row ▁n ▁and ▁column ▁k ▁is ▁given ▁by : ▁ ▁i . e ., ▁the ▁sum ▁of ▁the ▁first ▁k ▁n th - order ▁bin omial ▁coefficients . ▁The ▁first ▁rows ▁of ▁Bern oul li ' s ▁triangle