Identify three positive and three negative ions by name and symbol.  

Expert Answers
jerichorayel eNotes educator| Certified Educator

Positive ions are called cations and negative ions are anions. When an element loses an electron, it becomes positively charged and therefore it is called cations. If the element on the other side gains and electrons, it becomes negatively charged or anion. Ionic compounds usually have cations and anions in the solution (when they ionize). Examples of ions are as follows:

NaCl (sodium chloride in solution) produces ions which are sodium and chloride ions.

`NaCl -> Na^(+) + Cl^(-)`

`Na^(+) -> Sodium Ion` `Cl^(-) -> Chlo ride Ion`


Other example are:

`Br^(-) -> Bromide Ion`

 `CO3^(-2) -> Carbonate Ion`

`SO4^(-2) -> Su l fate Ion`


`Ca^(+2) -> Calcium Ion`

 `Al^(+3) -> Aluminum Ion`

`NH4^(+) -> Ammonium Ion`



astrosonuthird | Student
COMMON POSITIVE IONS (CATIONS) aluminium Al3+ lead(IV) Pb4+ ammonium NH4+ lithium Li+ barium Ba2+ magnesium Mg2+ calcium Ca2+ manganese (II) Mn2+ caesium Cs+ mercury (I) Hg22+ chromium (II) Cr2+ mercury (II) Hg2+ chromium (III) Cr3+ nickel(II) Ni2+ copper (I) Cu+ potassium K+ copper (II) Cu2+ silver Ag+ hydrogen H+ sodium Na+ iron (II) Fe2+ tin (II) Sn2+ iron (III) Fe3+ tin (IV) Sn4+ lead (II) Pb2+ zinc Zn2+ COMMON NEGATIVE IONS (ANIONS) acetate CH3COO- nitride N3- bromide Br- nitrite NO2- carbonate CO32- oxalate C2O42- hydrogen carbonate HCO3- oxide O2- chlorate ClO3- permanganate MnO4- perchlorate ClO4- phosphide P3- chloride Cl- phosphate PO43- chlorite ClO2- (mono)hydrogen phosphate HPO42- hypochlorite ClO- dihydrogen phosphate H2PO4- chromate CrO42- sulphate SO42- dichromate Cr2O72- hydrogen sulphate HSO4- cyanide CN- sulphide S2- fluoride F- hydrogen sulphide HS- hydride H- sulphite SO32- hydroxide OH- hydrogen sulphite HSO3- iodide I- thiocyanate SCN- nitrate NO3- thiosulphate S2O32-

Access hundreds of thousands of answers with a free trial.

Start Free Trial
Ask a Question