exam 3 review section

Question 1

effective nuclear charge

Answer 1

basically you have screens (the noble gas config) and your outer valence.

Question 2

Zeff =?

Answer 2

Z-S

Question 3

bonding atomic radius

Answer 3

trends smaller to the right and larger down

Question 4

Cation ____ anion ____

Answer 4

small big

Question 5

we lose highest ____ value electrons first

Answer 5

n (think p an s block before D)

Question 6

ionization energy trend (endothermic)

Answer 6

how hard it is to steal your electron. up and right = highest. halfway through p more than p4 and same for s

Question 7

electron affinity is

Answer 7

how much you want to steal electrons. 1st is exo, second and third is endo

Question 8

lattice energy

Answer 8

how much energy it take to turn a solid salt into gaseous ions (always endothermic).

Question 9

coulumbs law

Answer 9

Q1Q2/d

Question 10

lattice energy increases when and decreases when

Answer 10

charge increases, distance decreases

Question 11

dipole moment

Answer 11

charge times radius or Q times r basically distance makes the dipole increase

Question 12

polarity

Answer 12

eletronegativity difference

Question 13

formal charge

Answer 13

valence electrons - (1/2bonding electrons + a;; non-bonding)

Question 14

hypervalent

Answer 14

going past 8 valence electrons (10 or 12) only happen in n=3 and beyond

Question 15

memorize vseper graph

Answer 15

oky doky

Question 16

lone pairs ____ other angles

Answer 16

decompress (<) (less electron density

Question 17

double and triple bonds ____ other angles

Answer 17

compress (>) (more electron density

Question 18

to be polar, you must have ____ and not be _____

Answer 18

polar bonds, symmetrical. symmetry kills polarity

Question 19

valence bond theory

Answer 19

sigma bonds live in hybrids. H’s have s.

Question 20

study hybridization

Answer 20

oki

Question 21

bonding orbital

Answer 21

constructive, bottom

Question 22

antibonding orbitals

Answer 22

deconstructive, top, gives us nodal planes

Question 23

study molecular orbitals

Answer 23

oki

Question 24

memorize molecular charts for energy levels

Answer 24

oki