The are 24 valence electrons in a carbonate ion. http://www.800mainstreet.com/5/0005-006b-lewis.html
Hydrogen carbonate is a compound, not an element, and it therefore has a formula, not a symbol: H2CO3.
The chemical symbol for sodium carbonate is Na2CO3.
The symbol for fluoride is F. Fluoride has a valency of -1, meaning it typically gains one electron to achieve a stable electron configuration.
The chemical symbol for ammonium is NH4, and it has a valency of 1. Remember ammonium is a radical.
The valency of ammonium bi-carbonate is 1, since it contains the ammonium ion (NH4+) which has a charge of +1. The atomic number of elements in ammonium bi-carbonate are nitrogen with atomic number 7, hydrogen with atomic number 1, carbon with atomic number 6, and oxygen with atomic number 8.
The valency of calcium in calcium carbonate is +2, while the valency of carbonate is -2. This results in the chemical formula CaCO3.
The valency of calcium carbonate is 2. Calcium has a valency of 2 as it can lose two electrons to form a stable cation, and carbonate has a valency of 2 as it can accept two electrons to form a stable anion.
Symbol: Cl-Valency: -1.
Symbol for sodium cation is 'Na(+)' Its valency is '1'.
The symbol for nitrate is NO3-. The valency of nitrate is -1.
A hydrogen carbonate ion has the formula HCO3- so the valency of a hydrogen carbonate ion is -1.
The chemical symbol for gold is Au, and its valency is typically +1 or +3.
Ammonia is not an element and therefore does not have either a symbol or valency. Instead it has the chemical formula NH3.
Hydrogen carbonate is a compound, not an element, and it therefore has a formula, not a symbol: H2CO3.
The symbol equation for Potassium Carbonate is...K2CO3:)
Symbol is 'Hg' ( Hydragyrum ; from Latin ) It can exhibit two valerncies , viz, '1' & '2'. depending on its chemical environment.
The symbol of Silver is Argentum or Ag and valency is positive 3