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1. Draw the Lewis structure for SeOBr2 in the window below and then answer the questions that follow. Do not include overall ion charges or formal charges in your drawing. Do not draw double bonds to oxygen atoms unless they are needed for the central atom to obey the octet rule. a. What is the electron-pair geometry for Se in SeOBr2 ? b. What is the the shape (molecular geometry) of SeOBr2? 2. Draw the Lewis structure for SeF6 in the window below and then answer the questions that follow. Do not include overall ion charges or formal charges in your drawing. a. What is the electron-pair geometry for Se in SeF6 ? b. What is the the shape (molecular geometry) of SeF6?

Answer :

SeOBr2 has tetrahedral electron pair geometry and pyramidal structure and  SeF6 has octahedral electron pair geometry and octahedral structure as there is no lone pair of electron.

Lewis structure is also known as electron dot structure. This involves simplified diagrams used to represent the bonding of atoms in a molecule. In this type of representation, nonbonded electrons are shown as dots around the atoms while bonded electrons are shown as lines between the atoms.  from infrared and polarized Raman spectroscopy suggests that selenium oxobromide adopts a pyramidal molecular geometry with Cs symmetry.

In the Lewis structure of SeOBr2, it has 3 sigma bonds, one lone pair of electron and has the steric number 4.it has sp3 hybridization. it shows tetrahedral electron pair geometry. it shows a pyramidal structure.

In the Lewis structure of SeF6, it has 6 sigma bonds, no lone pair of electron and has the steric number 6. it has sp3d2 hybridization. it shows octahedral electron pair geometry. it shows a octahedral structure.

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