Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Alia - Chemistry > Lecture 7-Ionic Bonding > Flashcards

Lecture 7-Ionic Bonding Flashcards

(57 cards)

Start Studying
1
Q

What is a chemical bond?

A

The attractive force that holds 2/+ atoms together in a molecule

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

Why do atoms combine?

A

To gain stability

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

How do e- in atoms distribute themselves?

A

In the most stable/lowest energy configuration

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

How can a combined molecule achieve lower energy?

A

By rearranging e- between atoms

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

All element except who show a strong tendency to join with other elements to form compounds/

A

Noble gases

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

What group of elements obey the 18 e- rule and not the octet rule?

A

Transition metals

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

The strength of an electrostatic interaction is what?

A
  • Proportional to the size of the charge

- Inversely proportional to distance^2

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

What operates between 2 atoms when they come close together?

A

Attractive + repulsive forces

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

When do like charges repel?

A

E-/E- + nucleus/nucleus

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

When do opposite charges attract?

A

E-/nucleus

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

What is electronegativity?

A

The ability of an atom to attract toward itself the e- in a chemical bond

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

What does electronegativity depend on?

A
  • N.O of protons
  • Distance from the nucleus
  • Amount of screening by inner e-
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the most electronegative element and why?

A

Fluorine

  • Small
  • High nuclear charge
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does covalent bonding show?

A

Polarity of bonds

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

What does ionic bonding show?

A

Initial transfer of e- + direction

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

How are ionic bonds formed?

A

When 1/+ e- are FULLY transferred between atoms

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

Where does ionic bonding take place?

A

Between metals + non-metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Metal atoms do what to attain noble gas structure?

A

Lose e- —–> cations (positive ions)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Non-metal atoms will do what to attain noble gas structure?

A

Gain e- —–> anions (negative ions)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What does the formation of an ionic bond involve?

A

A DECREASE in energy compared to 2 isolated atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

The valency of an ion = what?

A

Its charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Is an ionic bond non-directional?

A

YES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What does non-directionality mean?

Study These Flashcards
A

The strength of the bond depends upon DISTANCE not directions

24
Q

What do ionic compounds dissolve + disassociate in?

Study These Flashcards
A

Polar solvents

25
Are ionic compounds charged overall?
NO
26
When do ionic compounds conduct electricity?
When molten / in solution
27
What do ionic compounds form?
Regular crystalline solids with high melting temperatures
28
In an ionic lattice, what is every ion attracted to?
All other ions with the opposite charge
29
What is lattice energy?
The enthalpy of formation energy change forming 1 mole of ionic solid from its gaseous ions - measures bond strength
30
What factors favour an easy cation formation?
Low ionization energy of the METAL
31
What factors favour an easy anion formation?
- High e- affinity/electronegativity of the non-metal - Small size of NON-METAL - Low charge on ANION - Large electronegativity DIFFERENCE between combining atoms - High lattice energy of IONIC COMPOUND
32
What ions are smaller than parent ions?
Positive ions
33
What is polarisation?
Distortion of the e- cloud of an atom
34
How does a small ion have more polarizing power?
Higher charge density
35
How does a large ion have great polarizability?
Larger its N.O of e-
36
DO anions / cations have more polarising power and why?
CATIONS , because they are generally smaller
37
If a negative ion is distorted ,because of polarisation it has what?
COVALENT character
38
What is an ideal ionic compound composed of?
Completely separate spherical ions
39
When is an ionic compound likely to have covalent character?
The cation = small +/ high charge (highly polarising) | The anion = large +/ high charge (highly polarisable)
40
What are polyatomic ions?
Ions made up of more than 1 type of atom
41
What type of binding is present in polyatomic ions?
Covalent
42
Ammonium
NH4+
43
NITRATE
NO3-
44
CYANIDE
CN-
45
SULFATE
SO4 2-
46
HYDROXIDE
HO-
47
CARBONATE
C03 2-
48
PEROXIDE
02 2-
49
PHOSPHATE
P04 3-
50
ACETATE
CH3CO2-
51
PERMANGENATE
Mn04-
52
OXALATE
C2O4 2-
53
DICHROMATE
CrO7 2-
54
What is the first word of an ionic compound name?
The CATION (except ammonium)
55
What is the second word of an ionic compound name?
The ANION
56
If the second name of an ionic compound is polyatomic, what does it end in?
The name of the polyatomic ion
57
If the second name of an ionic compound is the element what does it end in?
-ide

Alia - Chemistry (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions