Homework Help

what is the dot diagram for po3-3 compound and the molecular geometry and the electron...

r4rob92's profile pic

Posted via web

dislike 0 like
what is the dot diagram for po3-3 compound and the molecular geometry and the electron geometry

1 Answer | Add Yours

jerichorayel's profile pic

Posted (Answer #1)

dislike 1 like

PO3^-3 is also called a phosphite ion. In order to draw its electron dot structure first we need to get the total number of valence electrons.

P = 5

O = 6 x 3

e = 3 (negative charges add to the number of electrons)

--------------

total of 26 electrons

Next we connect the atoms with P being the central atom.

 

O - P - O

      |

      O

And then we supply the remaining electrons around the atoms.

  ..    ..   ..

: O - P - O :

  ''    |    ''

     : O :

       ''

Double check the electrons assigned if it is similar with the total number of electrons counted earlier. (One bond corresponds to 2 electrons.)

The electron geometry is tetrahedral and the molecular geometry is a trigonal pyramidal. 

 

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes