Nitrite Ion
The polyatomic ion for nitrite is NO2-.
HCO3- is the polyatomic ion with which sodium bonds. It is the bicarbonate ion.
The formula for the nitrite ion is NO2-.
The polyatomic ion is a carbonate ion, with formula CO3-2.
The polyatomic ion is the ammonium ion, NH4^+
The polyatomic ion represented by the formula NO2- is the nitrite ion.
The chemical formula of the polyatomic ion nitrite is NO2-.
The polyatomic ion for nitrite is NO2-.
Sulfite ion
HCO3- is the polyatomic ion with which sodium bonds. It is the bicarbonate ion.
The formula unit for the compound between NO2 and Be would be Be(NO2)2. This is because the charge on Be is 2+, so it requires 2 NO2 ions each with a charge of 1- to balance the charges in the compound.
The formula for one formula unit of the compound between NO2 and Be will be Be(NO2)2. Beryllium forms a +2 cation and nitrite (NO2-) is a polyatomic ion with a -1 charge, so two nitrite ions are needed to balance the charge of one beryllium ion in the compound.
Parentheses around a polyatomic ion in a chemical formula indicates that more than one of that ion is present in the compound. This notation helps clarify the chemical formula and the ratio of elements in the compound.
Formula: NO2-
The formula for the nitrite ion is NO2-.
The polyatomic ion is a carbonate ion, with formula CO3-2.
The polyatomic ion is a carbonate ion, with formula CO3-2.