Ch. 9 Chem Bonding, Molecular Geometry, Hybridization

Question 1

What is a 3D arrangement of atoms in a molecule?

Answer 1

Molecular Geometry
—- affects physical & chemical properties
— consider bond angles & bond lengths

Question 2

What accounts for geometric arrangement of electron pairs around a central atom so that electrons move as far apart as possible from each other bc of electron/electron repulsion?

Answer 2

VSEPR- Valence Shell Electron-Pair Repulsion Theory

Question 3

What are the 2 different types of geometries?

Answer 3

ABx- no lone pairs on central atom
ABxEy - central atom has lone pairs

Question 4

What affects the size of the bond angles?

Answer 4

Repulsion (repulsive forces) between electrons

Question 5

Steps for applying VSEPR :

Answer 5

1) draw the Lewis Structures
2) determine A, B, & E
3) predict geometry of atom

Question 6

Molecules with no lone pairs on the centra atom have what type of geometry?

Answer 6

ABx

A = central atom
B = surrounding atoms
x = # of B surrounding atoms

Question 7

What geometry is AB2?