Question

In: Chemistry

I'm not sure how to get these answers. I need the number of valence electrons, formal...

I'm not sure how to get these answers. I need the number of valence electrons, formal charge, electron group geometry, molecular geometry, and if there is resonance for each of the following.

AlBr2I PbH2I2

TIAtI2 TIBr2I PbAt2Cl2

Solutions

Expert Solution

1. AlBr2I

Total no.of valence electrons = 3 + 2(7) + 7 = 24

Formal charge of an atom = no.of valence electrons - no.of lone pair of electrons - no.of bonds around that atom

formal charge of each atom in the given molecule = 0

Electrons group geometry = trigonal planar

Molecular geometry = trigonal planar

2. PbH2I2

Total no.of valence electrons = 4 + 2 (1) + 2 (7) = 20 electrons

Formal charge of each atom in the given molecule = 0

Electron group geometry = tetrahedral

Molecular geometry = tetrahedral

3. TlAtI2

Total no.of valence electrons = 3 + 2(7) + 7 = 24

Formal charge of an atom = no.of valence electrons - no.of lone pair of electrons - no.of bonds around that atom

formal charge of each atom in the given molecule = 0

Electrons group geometry = trigonal planar

Molecular geometry = trigonal planar

4. TlBr2I

Total no.of valence electrons = 3 + 2(7) + 7 = 24

Formal charge of an atom = no.of valence electrons - no.of lone pair of electrons - no.of bonds around that atom

formal charge of each atom in the given molecule = 0

Electrons group geometry = trigonal planar

Molecular geometry = trigonal planar

5. PbAt2Cl2

Total no.of valence electrons = 4 + 2 (1) + 2 (7) = 20 electrons

Formal charge of each atom in the given molecule = 0

Electron group geometry = tetrahedral

Molecular geometry = tetrahedral


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