20 Covalent Bonding Flashcards

1
Q

elements involved in covalent bonding?

A

non-metal elements, compounds between non-metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

found on the right-hand side of the periodic table

A

non-metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

some are elements (substances made of the same type of atom), and some are compounds (substances made of two or more types of atoms)

A

molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

shells must be filled in order of closest to furthest from the nucleus

A

octet rule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

when reacting, the goal is a full valence shell

A

octet rule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

desired electron configuration is the same as a noble gas

A

octet rule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

formed when two atoms share a pair of electrons

A

covalent bonding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

electrons which contribute to covalent bond are found in valence shell

A

covalent bonding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

each atom usually contributes 1 e-, but some can react to make multiple ______

A

covalent bonds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

rep. of covalent bonding where shared e- pairs are shown as lines/pairs of dots between atoms

A

lewis structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

allows us to predict how elements will combine to form covalent compounds

A

lewis structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how do you draw a lewis structure?

A
  1. calculate the total number of valence e-
  2. determine central atom (element there is only one of)
  3. draw a line between atoms to form a covalent bond
  4. distribute the remaining valence e- to bonded atoms to have octet as lone pairs
  5. if the central atom does not have an octet, turn lone pairs from the bonded atoms to form a double/triple bond
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

which element is usually the central atom?

A

carbon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

which element can never be the central atom

A

hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

which group only forms singly bonds when oxygen is not present and are generally not central atoms?

A

halogens (fluorine, chlorine, bromine, iodine, astatine)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

can form double bond

A

group 6 elements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

can form triple bond

A

group 5 elements

18
Q

if your central atom is carbon, fluorine, oxygen, or nitrogen, what is your priority?

19
Q

if your central atom is NOT carbon, fluorine, oxygen, or nitrogen, what is your priority?

A

zero formal charge

20
Q

used to predict the most plausible lewis’ structure of particular molecule like carbonate

A

formal charge

21
Q

formula for formal charge

A

FC = v.e- - (n.b.e- + b.e-)

v.e-: valence of each atom
n.b.e-: lone pais (each pair = 2e-)
b.e-: bonded/shared e-

22
Q

theory that many molecules and ions are best described as a hybrid of two or more lewis-containing structures

23
Q

rep. of molecule/ion that differs only in distribution of v.e- like with carbonate

A

resonance structure

24
Q

what symbol is written between contributing structures to indicate resonance?

A

double-headed arrow

25
what suffix do you add to the root name of the second element?
"-ide"
26
prefix for 1 atom
mono
27
prefix for 2 atoms
di
28
prefix for 3 atoms
tri
29
prefix for 4 atoms
tetra
30
prefix for 5 atoms
penta
31
prefix for 6 atoms
hexa
32
prefix for 7 atoms
hepta
33
prefix for 8 atoms
octa
34
prefix for 9 atoms
nona
35
prefix for 10 atoms
deca
36
can simple covalent structures conduct electricity?
no
37
what prefix cannot be applied to the first element?
mono
38
what are the two things required for electrical conduction in covalently bonded molecules?
charged particles and free movement
39
fixed and cannot move
covalent bonds
40
very strong but have weak intermolecular forces
covalent bonds
41
do not require a lot of thermal energy to be overcome
covalent bonds
42
have low melting points; often liquid or gas at room temperature
simple covalent substances