Chem

Question 1

bonds in a straight line with no lone e- pairs

Answer 1

Linear 180 degrees

Question 2

2 bonds with one lone electron pair on central atom

Answer 2

Bent 120 degrees

Question 3

2 bonds with 2 or more lone electron pairs on the central atom

Answer 3

Bent 104.5 degrees

Question 4

3 atoms bonded to central atom with no lone e- pairs

Answer 4

Trigonal planar 120 degrees

Question 5

4 atoms bonded to central atom with no lone e- pairs

Answer 5

tetrahedral 109.5

Question 6

3 atoms bonded to central atom with 1 lone electron pair

Answer 6

trigonal pyramidal 107 degrees

Question 7

5 atoms bonded to the central atom with no lone e- pairs

Answer 7

Trigonal bipyramidal 90+120 degrees

Question 8

6 atoms bonded to the central atom with no lone e- pairs

Answer 8

octahedral 90 degrees

Question 9

How to find the bond type of two elements

Answer 9

take the most electronegative element and value and subtract the less electronegative element and value to get the differance.

Question 10

0-0.49 electronegativity difference

Answer 10

Non polar covalent

Question 11

.5-1.69 electronegativity difference

Answer 11

polar covalent

Question 12

1.7 or greater electronegativity difference

Answer 12

Ionic

Question 13

If there are lone e- pairs on the central atom it is…

Answer 13

Polar

Question 14

If the molecule is symmetric it is…

Answer 14

Non-polar

Question 15

What inter molecular force is only between Non-Polar molecules, is caused by a temporary shift in e-
Tie breaker: the bigger/larger the total # of e- equals stronger _____

Answer 15

London Force

Question 16

What inter molecular force is between polar molecules, is caused by difference in electronegativity
Tie breaker: the smaller the angle the stronger the _____

Answer 16

Dipole-dipole

Question 17

What inter molecular force is between polar molecules, only involves H, O, N, and F
Tie breaker: HN<HO<HF

Answer 17

H-Bonds

Question 18

What inter molecular force is only between ionic compounds, is between metal and non-metal
Tie breaker: F = Q Q2/d

Answer 18

Ionic

Question 19

Steric Number is…

Answer 19

Number of lone electron pairs on central atom plus the # of atoms bonded to the central atom

Question 20

INTRAmolecular forces

Answer 20

Force between atoms

Question 21

INTERmolecular Forces (IMF)

Answer 21

Force between whole molecules
-based on polarity

Question 22

Properties of covalent

Answer 22

Poor conductors, low melting and boiling points, not soluble in water, and exist as gases, liquids, or soft solids at room temperature

Question 23

How do you name covalent compounds

Answer 23

First element is always the element name and the second element gets the ending -ide

Question 24

Mono-

Answer 24

One

Question 25

Di-

Answer 25

Two

Question 26

Tri-

Answer 26

Three

Question 27

tetra-

Answer 27

Four

Question 28

penta-

Answer 28

Five

Question 29

hexa-

Answer 29

Six

Question 30

hepta-

Answer 30

Seven

Question 31

octa-

Answer 31

Eight

Question 32

nona-

Answer 32

Nine

Question 33

deca-

Answer 33

Ten

Question 34

Formal Charge

Answer 34

Number of bonds + Number of lone e-

Question 35

Give Formal charge, steric Number, Shape, Angle, Name, and inter molecular force of: H2O

Answer 35

Formal charge: 0-0 SN: 4 Shape: Bent Angle: 104.5 IMF: Hydrogen Bonding

Question 36

Give Formal charge, steric Number, Shape, Angle, Name, and inter molecular force of: HN3

Answer 36

Formal charge: 0-0 SN: 3 Shape: Trigonal Pyramidal Angle: 107 IMF: Hydrogen Bonding

Question 37

Give Formal charge, steric Number, Shape, Angle, Name, and inter molecular force of: HCN

Answer 37

Formal charge: 0-0-0 SN: 2 Shape: Linear Angle: 180 IMF: Dipole Dipole

Question 38

Give Formal charge, steric Number, Shape, Angle, Name, and inter molecular force of: SI

Answer 38

Formal charge: 0-0 SN: 6 Shape: Octahedral Angle: 90 IMF: LF

Question 39

Give Formal charge, steric Number, Shape, Angle, Name, and inter molecular force of: HN

Answer 39

Formal charge: 0-0 SN: 2 Shape: Trigonal Pyramidal Angle: 107 IMF: Hydrogen Bonding

Question 40

Give Formal charge, steric Number, Shape, Angle, Name, and inter molecular force of: NI3

Answer 40

Formal charge: 3-0-0-0 SN: 4 Shape: Trigonal Pyramidal Angle: 107 IMF: LF