KnowraStrontiumLinked fromLinked fromThe 4 pages that link to Strontium, each with the reason it gives.All 4Broader topic 2Narrower topic 1Compared with 1CalciumCompared with: Strontium lies below calcium in Group 2 and is more reactive.Flame testBroader topic: Its red flame provides a comparison with lithium's crimson-red result.Strontium oxideNarrower topic: Strontium atoms provide the positive ions in SrO.Strontium nitrateBroader topic: Strontium compounds produce the red emission associated with this salt.