Unit Six: Bonding

Question 1

What is the major assumption of the VSEPR theory that is used to predict the shape of atoms?

Answer 1

The premise of VSEPR is that the** valence electron pairs** surrounding an atom tend to repel each other, and will therefore adopt an arrangement that minimizes this repulsion, thus determining the molecule’s geometry. The sum of the number of atoms bonded to a central atom and the number of lone pairs formed by its nonbonding valence electrons is known as the central atom’s STERIC NUMBER.

Question 2

Rank from the strongest to weakest intermolecular force among: dipole-dipole, Londen Dispersion, Hydrogen Bonding

Answer 2

HB > DD > LD

Question 3

Example of nonpolar coavalent compound with nonpolar covalent bonds

Answer 3

N₂ other diatomics,

Question 4

The stronger metallic vond is, the _____ heat of vaporization of the metal

Answer 4

Higher

Question 5

Name the type of energy that is a measure of strength for each of the following

Ionic Bond

Covalent Bond

Metallic Bond

Answer 5

???

Question 6

Draw the Lewis dot diagram for COCL₂, it’s AXE notation, and VSEPR shape

Answer 6

AX₃

Trigonal Pyrimdial