both are -1
The nitrate ion is NO3- and the minus sign superscripted means it has a -1 charge. The chlorite ion is ClO2- and the minus sign superscripted means it, too, has a -1 charge.
Since Group 1A monatomic ions have a charge of 1+, only a polyatomic ion with a charge of 1- can combine to form a compound in which the monatomic ions and polyatomic ions are present in a 1 to 1 ratio. The following polyatomic ions with a charge of 1- can form a neutral compound when combined with a group of 1A monatomic ion in a 1 to 1 ratio.acetate - C2H3O2-bicarbonate (or hydrogen carbonate) - HCO3-bisulfate (or hydrogen sulfate) - HSO4-chlorate - ClO3-chlorite - ClO2-cyanate - OCN-cyanide - CN-dihydrogen phosphate - H2PO4-hydroxide - OH-nitrate - NO3-nitrite - NO2-perchlorate - ClO4-permanganate - MnO4-thiocyanate - SCN- Source: http://chemistry.about.com/od/chartstables/tp/common-polyatomic-ions.htm
Except chloride, all others are polyatomic ions.
Nitrate (NO3^-), because the Hydroxide ion also has a negative one charge (OH^-)
An atom is a neutral particle with the same number of protons as electrons. Ions are particles that have either more or less electrons. Ions can be positively charged (cations) or negatively charged. Ions will lose or gain electrons in order to have eight outer shell electrons. A chlorine atom has 17 electrons and 7 valence electrons (outer shell). It "wants" to have eight valence electrons, so it will gain one. Therefore, the typical chlorine atom will have one electron more.
It depends but most are negative, e.g. nitrite, sulfate, nitrate, sulfite, chlorite, phosphate, phosphite, permanganate, chromate, dichromate etc. There are however, polyatomic ions that are positively charged.
The nitrate ion is NO3- and the minus sign superscripted means it has a -1 charge. The chlorite ion is ClO2- and the minus sign superscripted means it, too, has a -1 charge.
Since Group 1A monatomic ions have a charge of 1+, only a polyatomic ion with a charge of 1- can combine to form a compound in which the monatomic ions and polyatomic ions are present in a 1 to 1 ratio. The following polyatomic ions with a charge of 1- can form a neutral compound when combined with a group of 1A monatomic ion in a 1 to 1 ratio.acetate - C2H3O2-bicarbonate (or hydrogen carbonate) - HCO3-bisulfate (or hydrogen sulfate) - HSO4-chlorate - ClO3-chlorite - ClO2-cyanate - OCN-cyanide - CN-dihydrogen phosphate - H2PO4-hydroxide - OH-nitrate - NO3-nitrite - NO2-perchlorate - ClO4-permanganate - MnO4-thiocyanate - SCN- Source: http://chemistry.about.com/od/chartstables/tp/common-polyatomic-ions.htm
ammonium
polyatomic ions are those ions which carry more than one atom,we can say that a group of atoms having single charge( which may be positive or negative) are polyatomic ions.
All ions have an electrical charge.
A Simple ion is any ion on the periodic table.a Polyatomic ion contains at least two simple ions buy still only forms one compound.the main polyatomic ions are:Acetate: (C2H3COO) with a charge of -1Hydroxide: (OH) with a charge of -1Bromate: (BrO3) with a charge of -1Perchlorate: (ClO4) with a charge of -1Chlorate: (ClO3) with a charge of -1Chlorite: (ClO2) with a charge of -1Hypochlorite: (ClO) with a charge of -1Cyanide: (CN) with a charge of -1Nitrate: (NO3) with a charge of -1Nitrite: (NO2) with a charge of -1Hydrogen Sulfate: (HSO4) with a charge of -1Hydrogen Sulfite: (HSO3) with a charge of -1Sulfate: (SO4) with a charge of -2Sulfite: (SO3) with a charge of -2Hydrogen Carbonate: (HCO3) with a charge of -1Carbonate: (CO3) with a charge of -2Permaganate: (MnO4) with a charge of -1Peroxide: (O2) with a charge of -2Dihydrogen Phosphate: (H2PO4) with a charge of -1Hydrogen Phosphate: (HPO4) with a charge of -2Phosphate: (PO4) with a charge of -3Phosphite: (PO3) with a charge of -3Chromate: (CrO4) with a charge of -2Dichromate: (Cr2O7) with a charge of -2Oxalate: (C2O4) with a charge of -2Arsenate: (AsO4) with a charge of -3Ammonium (NH4) with a charge of +1Ammonium is the only Polyatomic Ion with a positive charge.Remember to make sure it says (for example) ChlorITE not ChlorIDE when using a Polyatomic ion, because Chloride is Cl and Chlorite is ClO2.:) Hope I helped!Source(s):Advanced Chemistry Student.
This isn't a rule.
Most polyatomic ions have a negative charge. There are only 2 positive polyatomic ions; Mercury(I) ion and Ammonium ion. False.
The atoms in a polyatomic ion are held together with covalent bonds, but polyatomic ions combine with ions of opposite charge to form ionic compounds.
polyatomic ions combine with ions of the opposite charge to form ionic compounds. They are often found in nature dissolved in water or precipitated out as solids.
Nitrate Cyanide Hydroxide Acetate