Sodium Iodide is a salt of the highly reactive metal Sodium (Na) and the equally reactive halogen gas, Iodine (I). Because Sodium has a valence of +1 (an electron to spare in its outer shell) and Iodine a valence of -1 (an electron short in its outer shell), the two react one to one. The formula therefore is NaI.
Sodium forms salts with all the halogen gases including Chlorine the result of which is standard table salt, NaCl.
Na+ and I- combine to form NaI, sodium iodide. At standard temperature and pressure, sodium iodide forms small white crystals. It is primarily used to prevent and treat Iodine deficiency.
Sodium Sulfide: 2Na+ + S2- --> Na2S
Na3PO4
This formula is Na3PO4.
Na (sodium) has a valence of 1+ and oxygen (O) has a valence of 2-, so it will take 2 Na for each O. The compound formed (sodium oxide) has the formula Na2O.
The chemical formula of calcium phosphate is Ca3(PO4)2.
Na(2)S
Sodium (Na), and fluorine (F) combine to form sodium fluoride (NaF).
This formula is Na3PO4.
Back is for salt
Na (sodium) has a valence of 1+ and oxygen (O) has a valence of 2-, so it will take 2 Na for each O. The compound formed (sodium oxide) has the formula Na2O.
The chemical formula of calcium phosphate is Ca3(PO4)2.
Na2S
Na+1 NO3- => Na(NO3)
Na + ( a sodium ion )A cationbonds withSO4 2- ( the polyatomic ion sulfate )an anionto formNa2 SO4The ionic compound sodium sulfate
Na(2)S
Sodium (Na), and fluorine (F) combine to form sodium fluoride (NaF).
Na2+1O11-
Na3N. Sodium nitride.
NaHCO3 with Na+ and HCO3- ions