Question

Which of the following compounds contain lead (II) ion? A.) PbO B.) PbCl4 C.) Pb2O D.) Pb2S

Answer 1

For example, Cobalt in CoBr2

Similar to chlorine, bromine (Br) is also in the halogen group, so we know that it has a charge of -1 (Br-). Since there are two bromines, the anion (bromine) gives us a charge of -2. In addition, we know that CoBr2 has an overall neutral charge, therefore we can conclude that the cation (cobalt), Co must have an oxidation state of +2 in order to neutralize the -2 charge from the two bromines. With this said, we get Co2+ and 2Br-, which would result as CoBr2.

Using similar method, which do you think has Lead (II).
HINT: It's not D

Answer 2

That's very informative, @Zaara but I don't think it's relevant to the question :P

Answer 3

oh yeah... iv made a mistake vit my post.... thnkx