Exam 3 cards

Question 1

what is ionic bonding

Answer 1

electrostatic attraction that holds these oppositely charged ions together in an ionic compound

Question 2

what is ionic lattice

Answer 2

the arrangement/ structure of an ionic compound

Question 3

what is lattice energy

Answer 3

the amount of energy required to convert a mole of ionic solid to its constituent ions in the gas phase

Question 4

what is the octet rule

Answer 4

atoms will lose, gain, or share electrons to achieve a noble gas electron configuration

Question 5

what is electronegativity

Answer 5

the ability of an atom in a compound to draw electrons to itself

Question 6

what is dipole moment

Answer 6

a quantitative measure of the polarity of a bond

Question 7

what is the electron geometry of a structure with 2 electron groups and its predicted bond angle

Answer 7

linear and 180*

Question 8

what is the electron geometry of a structure with 3 electron groups and its predicted bond angle

Answer 8

trigonal planar and 120*

Question 9

what is the electron geometry of a structure with 4 electron groups and its predicted bond angle

Answer 9

tetrahedral 109.5*

Question 10

what is the electron geometry of a structure with 5 electron groups and its predicted bond angle

Answer 10

trigonal bipyramidal and 90, 120

Question 11

what is the electron geometry of a structure with 6 electron groups and its predicted bond angle

Answer 11

octahedral and 90*

Question 12

what is the molecular geometry of a structure with 3 groups and 1 lone pair

Answer 12

bent

Question 13

what is the molecular geometry of a structure with 4 groups and 1 lone pair

Answer 13

trigonal pyramidal

Question 14

what is the molecular geometry of a structure with 4 groups and 2 lone pairs

Answer 14

bent

Question 15

what is the molecular geometry of a structure with 5 groups and 1 lone pair

Answer 15

sawhorse

Question 16

what is the molecular geometry of a structure with 5 groups and 2 lone pairs

Answer 16

t-shaped

Question 17

what is the molecular geometry of a structure with 5 groups and 3 lone pairs

Answer 17

linear

Question 18

what is the molecular geometry of a structure with 6 groups and 1 lone pair

Answer 18

square pyramidal

Question 19

what is the molecular geometry of a structure with 3 groups and 2 lone pairs

Answer 19

square planar

Question 20

why do deviations from ideal bond angles occur in molecules

Answer 20

some electron domains are better than others at repelling neighboring domains

Question 21

what is the valence bond theory

Answer 21

atoms share electrons when an atomic orbital on one atom overlaps with an atomic orbital on the other

Question 22

what is a hybrid orbital

Answer 22

the mixing/ overlapping of different orbitals

Question 23

what is the molecular orbital theory

Answer 23

atomic orbitals involved in bonding actually combine to form new orbital that are the “property” of the entire molecule rather than of the atoms forming the bonds

Question 24

paramagnetic

Answer 24

species that are attracted to magnetic fields

Question 25

diamagnetic

Answer 25

species are weakly repelled by magnetic fields

Question 26

what is the value of molecular orbital theory over valence bond theory

Answer 26

better explanation of the color of some molecules
*describes resonance

Question 27

how do you calculate bond order

Answer 27

bonding - anti bonding / 2

Question 28

what are the characteristics of gases that separate them from liquids and solids

Answer 28

1. take the shape and volume of their container
2. compressible
3. less dense than l or s
4. readily form solutions

Question 29

what is atmospheric pressure

Answer 29

the force a column of air on the surface of the earth

Question 30

what is pressure in a container

Answer 30

gas particle collisions with the container walls