# In this and the following four problems you have to determine the structure of a molecule or polyatomic ion us

In this and the following four problems you have to determine the structure of a molecule or polyatomic ion using VSEPR or ED theory. You also have to determine the hybridization of the atomic orbitals on the central atom. Use the character labels from the table below to indicate the proper VSEPR arrangement of electron domains around the central atom and the actual structure of the molecule or ion. Note that you have only three tries on each part.

2 Pairs L = Linear

3 Pairs TPL = Trigonal Planar

B = Bent

4 Pairs TET = Tetrahedral

TPY = Trigonal Pyramidal

B = Bent

5 Pairs TBP = Trigonal Bipyramidal

S = See-saw

T = T-shaped

L = Linear

6 Pairs O = Octahedral

SPY = Square Pyramidal

SQP = Square Planar

-What is the total number of valence electrons available in IO4-?

-What is the number of lone-pairs of electrons (nonbonding electron domains) on the central I atom in IO4-?

Relevance

-What is the total number of valence electrons available in IO4-?

7 valence electrons on iodine

6 valence electrons on each of four oxygens, 24 more electrons

1 electron for the "-1" charge

for a grand total of 32 electrons

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-What is the number of lone-pairs of electrons (nonbonding electron domains) on the central I atom in IO4-?

all of its electrons are being bonded

it is a tetrahedral configuration in both electron domain & molecular geometry around the centran Iodine atom

http://en.wikipedia.org/wiki/Perchlorate