TEST 1

Question 1

electron orbital procession

Answer 1

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2…….

Question 2

Electron Configuration for Calcium (Ca)

Answer 2

1s2 2s2 2p6 3s2 3p6 4s2 OR [Ar] 4s2

Question 3

Electron configuration for Iron (Fe)

Answer 3

1s2 2s2 2p6 3s2 3p6 4s2 3d6 OR [Ar] 4s2 3d6

Question 4

Electron configuration for Silicone (Si)

Answer 4

1s2 2s2 2p6 3s2 3p2 OR [Ne] 3s2 3p2

Question 5

Cation

Answer 5

positively charged
lost electron

Question 6

Most electronegative atom and Charge number

Answer 6

Flourine= 4.0

Question 7

Ionic bond electronegativity & ex

Answer 7

> 1.9
Na-O

Question 8

Polar bond electronegativity & ex

Answer 8

.5-1.9
C-O
C-N
C-F

Question 9

Nonpolar Covalent Bond electronegativity & ex

Answer 9

<.5
C-H
C-C

Question 10

Carbocation

Answer 10

3 valence electrons
no lone pairs

Question 11

Carboanion

Answer 11

5 valence electrons
1 lone pair

Question 12

best center atom of a molecule?

Answer 12

the one that can form most bonds

Question 13

What to do with total valence electrons in a molecule?

Answer 13

find total number of VE’s, the find if its divisible by 8. If it is there are no lone pairs on central atom. If it isn’t then find the closest number that is divisible by 8 and subtract the total VE’s by the closest number. That number is the number of electrons on central atom.

Question 14

ammonium

Answer 14

nitrogen with 1 less electron

Question 15

amine

Answer 15

nitrogen with 5 Ve’s

Question 16

anionic amine

Answer 16

nitrogen with an extra e

Question 17

oxonium

Answer 17

oxygen with 1 less Ve

Question 18

oxo

Answer 18

oxygen with 6 Ve’s

Question 19

oxide

Answer 19

oxygen with 1 extra Ve

Question 20

stronger bond between sigma & pi

Answer 20

sigma>pi

Question 21

pi bond constitution

Answer 21

overlapping of sideways p orbitals over a sigma bond

Question 22

things to avoid in lewis structures

Answer 22

0-0
0-halogens (flourine column)
tri-cyclic rings

Question 23

Shape that will occur generally from Sp orbital

Answer 23

linear
180

Question 24

Shape that will occur generally from Sp2 orbital

Answer 24

trigonal planar
120

Question 25

Shape/bond angle that will occur generally from Sp3 orbital

Answer 25

tetrahedral 109.5

Question 26

variations of SP2 orbital shape

Answer 26

linear like (2 lone pairs) bent (planar, one pair of lone electrons)

Question 27

variations of sp3 orbital

Answer 27

bent (planar 2 pairs of lone electrons) pyramindal( 1 pair of lone electrons)

Question 28

likely hydrogen bonds & examples

Answer 28

H-N H-O H-S H-any halogen NH3 H20 CH3OH CH3NH2 CH3CO2H

Question 29

lewis base

Answer 29

electron PAIR donor nucleophile

Question 30

lewis acid

Answer 30

electron PAIR acceptor electrophile

Question 31

water pka and conjugate base

Answer 31

15.7 pka OH-