Symbol: Cl-Valency: -1.
+1
You don't say that. What you do say is that the valency of sulphur in sulphur trioxide is 6.
The perchlorate ion has one available bond.
Cl is the symbol for chlorine. Watch out when you write chemical symbols that you correctly use upper and lower case! The superscript minus sign tells you that the chlorine has gained an electron and become a chloride ion, negatively charged.
Fe2O3
the valency of element sodium chloride is 1
single valency. last orbit has 7 electrons.
Na+ valency is one
1 sodium combines with 1 chloride to form sodium chloride and so the valency is '1' and not 4...
Ammonia is not an element and therefore does not have either a symbol or valency. Instead it has the chemical formula NH3.
Copper Chloride
Symbol of nitride is N and its valency is 3
F 1
The symbol of Silver is Argentum or Ag and valency is positive 3
The chemical symbol for ammonium is NH4, and it has a valency of 1. Remember ammonium is a radical.
The symbol of the chloride anion is Cl-.
we usually use roman numerals in writing names of compounds of transitional elements which have more than one valency . for example we have two compounds of iron chloride , iron(II)chloride and iron(III)chloride depending on the valency of iron in each compound.