The valence of chlorine is -1.
+5
1
The oxidation number of Na in NaCl is +1, while the oxidation number of Cl in NaCl is -1.
O.S. of O = -2
Sodium chlorate is very soluble in water.
It is generally used as an oxidizer because it contains chlorine in +5 oxidation state.
AgNO2+NaCl-->AgCl+NaNO3 It's a simple double replacement reaction.
+1 for Na -1 for Cl
The chemical equation is:2 NaClO3 = 2 NaCl + 3 O2
It has to be Pb(NO3)2 with NaCl as Pb has a +II oxidation state and NO3 has -I oxidation state. The reaction is the following: Pb(NO3)2 +2NaCl ----> PbCl2 + 2NaNO3
Na: +1 Cl: -1
Oxygen in compounds is almost always in the -2 formal charge, and the charges of all atoms must add to the overall charge. 3 x -2 + (Cl) = -1, thus (Cl) = +5.