1
$\begingroup$

I have an exercise and I have to find the formula of those ions:

  • Arsenate ion
  • Perbromate ion
  • Selenite ion
  • Hydrogen Tellurate ion

The solution tells: $\ce{BrO4-,\space SeO3^{2-}, AsO4^{3-}, HTeO4^{-}}$.

My question is, how do I get to those results and how do I know their charge to be 1-, 2-, 3-, and 1-?

Improve this question
$\endgroup$
3
  • 1
    $\begingroup$ Can you amend your post to include the work you've done to solve the problem? As it stands, it looks a lot like homework and might be closed by the community here as such. $\endgroup$
    – Todd Minehardt
    Commented Nov 17, 2016 at 15:59
  • $\begingroup$ No. It is not a homework. the book I am using is Chemistry, The central science 13th edition by Theodore L. Brown. It is the exercice number 2.107 on page 79. When looking at the solution at the back of the book, I got the answers I wrote above. I do not understand though, why the respective charges of the ions are like so $\endgroup$
    – billyandriam
    Commented Nov 17, 2016 at 16:03
  • $\begingroup$ I could not understand it though. I am a first year student $\endgroup$
    – billyandriam
    Commented Nov 17, 2016 at 16:52

0

Reset to default

Browse other questions tagged or ask your own question.