Answer :

diene
potassium sulfide=K2S
rubidium bromide=RbBr
lithium selenide=Li2Se
caesium sulfide=Cs2S
zinc oxide=ZnO
strontium nitride=Sr3N2
potassium sulfide: [tex] K_{2} S[/tex]
rubidium bromide: RbBr
caesium sulfide: Cs2S
zinc oxide: ZnO
strontium nitride:[tex] Sr_{3} N_{2} [/tex]
lithium selenide: Li2Se