O Chem

Question 1

2 types of covalent bonds

Answer 1

sigma and pi

Question 2

most electron density in sigma bonds is ..

Answer 2

between the nuclei of the 2 atoms

Question 3

electron density in pi bonds is located

Answer 3

above and below the internuclear region

Question 4

pi bonds are composed of

Answer 4

parallel p orbitals

Question 5

which is stronger - sigma or pi?

Answer 5

sigma, almost always

Question 6

exception to sigma bond stronger rule

Answer 6

F2

Question 7

why is F2 exception to sigma bond rule?

Answer 7

small size of atom, leads to nuclei repelling one another

Question 8

because F2 is composed of pi bonds, it has

Answer 8

a weak bond dissociation energy, less than that of Cl2

Question 9

Alkane C hybridization

Answer 9

sp3

Question 10

alkane bond type

Answer 10

sigma bonds

Question 11

alkene bond type

Answer 11

both sigma and pi

Question 12

hydrogens use - orbitals to form bonds

Answer 12

s

Question 13

bond order in double bonds

Answer 13

sigma then pi

Question 14

bond order in triple bonds

Answer 14

sigma, pi, pi

Question 15

for e- density to overlap e- must have the

Answer 15

same spin

Question 16

long bonds are

Answer 16

weaker

Question 17

single bonds are

Answer 17

composed of 1 sigma bond between the atoms, and are the longest

Question 18

double bonds are

Answer 18

1 sigma and 1 pi bond

Question 19

triple bonds are

Answer 19

1 sigma, and 2 pis and are the shortest bonds

Question 20

greater substitution results in a

Answer 20

stronger bond

Question 21

HONC 1234 rule

Answer 21

H - 1 bond
O 2 bonds
N 3 bonds
C 4 bonds

Question 22

hybrid orbitals are orbitals involved in

Answer 22

making bonds between atoms

Question 23

atoms with 4 e- pairs are

Answer 23

tetrahedral and have sp3 hybridization

Question 24

atoms with 3 e- pairs are

Answer 24

trigonal planar

Question 25

atoms with 2 e- pairs are

Answer 25

linear

Question 26

relative acidity of hybrid orbitals

Answer 26

sp>sp2>sp3

Question 27

predicted bond angle of sp2

Answer 27

120 degrees

Question 28

Z conformation

Answer 28

higher priority subs on same side of bond

Question 29

in german that Z word means

Answer 29

together

Question 30

E conf

Answer 30

higher priority subs on opp side of bond

Question 31

determining higher priority for E v Z

Answer 31

higher priority of sub with higher atomic number