Answer:
lithium fluoride => LiF
lithium chloride =>LiCl
lithium bromide => LiBr
lithium iodide => Lil
lithium oxide =>Li₂O
lithium sulfide => Li₂
sodium fluoride => NaF
sodium chloride => NaCl
sodium bromide => NaBr
sodium iodide => Nal
sodium oxide => Na₂O
sodium sulfide => Na₂S
potassium fluoride => KF
potassium chloride => KCl
potassium bromide => KBr
potassium iodide => KI
potassium oxide => K₂O
potassium sulfide => K₂S
ammonium fluoride =>NH₄F
ammonium chloride => NH₄Cl
ammonium bromide => NH₄Br
ammonium iodide => NH₄I
ammonium sulfide => (NH₄)₂S