Chapter 9

Question 1

are the outer shell electrons of an atom, they are the electrons that participate in chemical bonding

Answer 1

Valence Electrons

Question 2

the electrostatic force that holds ions together in an ionic compound

Answer 2

Ionic Bond

Question 3

is a chemical bond in which two or more electrons shared by two atoms

Answer 3

Covalent Bond

Question 4

two atoms share two pairs of electrons

Answer 4

Double Bond

Question 5

two atoms share three pairs of electrons

Answer 5

Triple Bond

Question 6

What is the relationship of bond lengths to type of bonds

Answer 6

Triple Bond < Double Bond < Single Bond

Question 7

is a covalent bond with greater electron density around one of the two atoms

Answer 7

Polar Covalent Bond

Question 8

is the ability of an atom to attract toward itself the electrons in a chemical bond

Answer 8

Electronegativity

Question 9

Electron affinity is…

Answer 9

measurable

Question 10

Electronegativity is…

Answer 10

relative

Question 11

If the electronegativity is less than 2…

Answer 11

It is polar covalent

Question 12

If the electronegativity is greater than 2

Answer 12

Ionic

Question 13

If the electronegativity is equal to 0, 0.2, 0.5

Answer 13

Purely covalent/Non-polar

Question 14

is the difference between the number of valence electrons in an isolated atom and the number of electrons assigned to that atom in a lewis structure

Answer 14

Formal Charge

Question 15

Exceptions to the Octet Rule

Answer 15

The incomplete octet (the valence electrons does not require eight), Odd-electron molecules, the expanded octet (related to d-orbitals)

Question 16

a single molecule that cannot be represented by only one lewis structure

Answer 16

Resonance Structure

Question 17

The sum of the formal charges of the atoms in a molecule or ion must equal the charge on the molecule or ion

Answer 17

(N.A.) Repeat until you succeed