Ions

Question 1

KI

Answer 1

Potassium iodide
K^+
I^-

Question 2

CaS

Answer 2

Calcium sulfide
Ca^2+
S^2-

Question 3

Li3N

Answer 3

Lithium nitride
Li^+
N^3-

Question 4

CsBr

Answer 4

Cesium bromide
Cs^+
Br^-

Question 5

MgO

Answer 5

Magnesium oxide
Mg^2+
O^2-

Question 6

H^+

Answer 6

Hydrogen

Question 7

Li^+

Answer 7

Lithium

Question 8

Na^+

Answer 8

Sodium

Question 9

K^+

Answer 9

Potassium

Question 10

Cs^+

Answer 10

Cesium

Question 11

Be^2+

Answer 11

Beryllium

Question 12

Mg^2+

Answer 12

Magnesium

Question 13

Ca^2+

Answer 13

Calcium

Question 14

Ba^2+

Answer 14

Barium

Question 15

Al^3+

Answer 15

Aluminum

Question 16

H^-

Answer 16

Hydride

Question 17

F^-

Answer 17

Fluoride

Question 18

Cl^-

Answer 18

Chloride

Question 19

Br^-

Answer 19

Bromide

Question 20

I^-

Answer 20

Iodide

Question 21

O^2-

Answer 21

Oxide

Question 22

S^2-

Answer 22

Sulfide

Question 23

N^3-

Answer 23

Nitride

Question 24

P^3-

Answer 24

Phosphide

Question 25

Fe^3+

Answer 25

Iron(III)

Question 26

Fe^2+

Answer 26

Iron(II)

Question 27

Cu^2+

Answer 27

Copper(II)

Question 28

Cu^+

Answer 28

Copper(I)

Question 29

Co^3+

Answer 29

Cobalt(III)

Question 30

Co^2+

Answer 30

Cobalt(II)

Question 31

Sn^4+

Answer 31

Tin(IV)

Question 32

Sn^2+

Answer 32

Tin(II)

Question 33

Pb^4+

Answer 33

Lead(IV)

Question 34

Pb^2+

Answer 34

Lead(II)

Question 35

Hg^2+

Answer 35

Mercury(II)

Question 36

Hg2^2+

Side note

Answer 36

Mercury(I)

*mercury(I) ions always occur bound together to form Hg2^2+ ions.

Question 37

Ag+

Answer 37

Silver

Only one type of ion so no Roman numeral is used

Question 38

Zn^2+

Answer 38

Zinc

Only one type of ion so no Roman numeral

Question 39

Cd^2+

Answer 39

Cadmium

Only one type of ion so no Roman numeral used

Question 40

NH4^+

Answer 40

Ammonium

Question 41

NO2^-

Answer 41

Nitrite

Question 42

NO3^-

Answer 42

Nitrate

Question 43

SO3^2-

Answer 43

Sulfite

Question 44

SO4^2-

Answer 44

Sulfate

Question 45

HSO4^-

Two names

Answer 45

Hydrogen sulfate
(Bisulfate is widely used common name)

Question 46

OH^-

Answer 46

Hydroxide

Question 47

CN^-

Answer 47

Cyanide

Question 48

PO4^3-

Answer 48

Phosphate

Question 49

HPO4^2-

Answer 49

Hydrogen phosphate

Question 50

H2PO4^-

Answer 50

Dihydrogen phosphate

Question 51

NCS^- or SCN^-

Answer 51

Thiocyanate

Question 52

CO3^2-

Answer 52

Carbonate

Question 53

HCO3^-

Two names

Answer 53

Hydrogen carbonate 
(Bicarbonate is a widely used common name)

Question 54

ClO^- or OCl^-

Answer 54

Hypochlorite

Question 55

ClO2^-

Answer 55

Chlorite

Question 56

ClO3^-

Answer 56

Chlorate

Question 57

ClO4^-

Answer 57

Perchlorate

Question 58

C2H3O2^-

Answer 58

Acetate

Question 59

MnO4^-

Answer 59

Permanganate

Question 60

Cr2O7^2-

Answer 60

Dichromate

Question 61

CrO4^2-

Answer 61

Chromate

Question 62

O2^2-

Answer 62

Peroxide

Question 63

C2O4^2-

Answer 63

Oxalate

Question 64

S2O3^2-

Answer 64

Thiosulfate

Question 65

How many does this prefix indicate?

Mono-

Answer 65

1

Question 66

How many does this prefix indicate?

Di-

Answer 66

2

Question 67

How many does this prefix indicate?

Tri-

Answer 67

3

Question 68

How many does this prefix indicate?

Tetra-

Answer 68

4

Question 69

How many does this prefix indicate?

Penta-

Answer 69

5

Question 70

How many does this prefix indicate?

Hexa-

Answer 70

6

Question 71

How many does this prefix indicate?

Hepta-

Answer 71

7

Question 72

How many does this prefix indicate?

Octa-

Answer 72

8

Question 73

How many does this prefix indicate?

Nona-

Answer 73

9

Question 74

How many does this prefix indicate?

Deca-

Answer 74

10

Question 75

HF

Answer 75

Hydrofluoric acid

Question 76

HCl

Answer 76

Hydrochloric acid

Question 77

HBr

Answer 77

Hydrobromic acid

Question 78

HI

Answer 78

Hydroiodic acid

Question 79

HCN

Answer 79

Hydrocyanic acid

Question 80

H2S

Answer 80

Hydrosulfuric acid

Question 81

HNO3

Answer 81

Nitric acid

Question 82

HNO2

Answer 82

Nitrous acid

Question 83

H2SO4

Answer 83

Sulfuric acid

Question 84

H2SO3

Answer 84

Sulfurous acid

Question 85

H3PO4

Answer 85

Phosphoric acid

Question 86

HC2H3O2

Answer 86

Acetic acid

Question 87

NaCl

Answer 87

Sodium chloride
Na^+
Cl^-

Question 88

Hydrogen

Answer 88

H+

Question 89

Lithium

Answer 89

Li+

Question 90

Sodium

Answer 90

Na+

Question 91

Potassium

Answer 91

K+

Question 92

Cesium

Answer 92

Cs+

Question 93

Beryllium

Answer 93

Be^2+

Question 94

Magnesium

Answer 94

Mg^2+

Question 95

Calcium

Answer 95

Ca^2+

Question 96

Barium

Answer 96

Ba^2+

Question 97

Aluminum

Answer 97

Al^3+

Question 98

Hydride

Answer 98

H^-

Question 99

Fluoride

Answer 99

F^-

Question 100

Chloride

Answer 100

Cl^-

Question 101

Bromide

Answer 101

Br^-

Question 102

Iodide

Answer 102

I^-

Question 103

Oxide

Answer 103

O^2-

Question 104

Sulfide

Answer 104

S^2-

Question 105

Nitride

Answer 105

N^3-

Question 106

Phosphide

Answer 106

P^3-

Question 107

Iron(III)

Answer 107

Fe^3+

Question 108

Iron(II)

Answer 108

Fe^2+

Question 109

Copper(II)

Answer 109

Cu^2+

Question 110

Copper(I)

Answer 110

Cu^+

Question 111

Cobalt(III)

Answer 111

Co^3+

Question 112

Cobalt(II)

Answer 112

Co^2+

Question 113

Tin(IV)

Answer 113

Sn^4+

Question 114

Tin(II)

Answer 114

Sn^2+

Question 115

Lead(IV)

Answer 115

Pb^4+

Question 116

Lead(II)

Answer 116

Pb^2+

Question 117

Mercury(II)

Answer 117

Hg^2+

Question 118

Mercury(I)

Answer 118

Hg2^2+

Question 119

Silver

Answer 119

Ag^+

Question 120

Zinc

Answer 120

Zn^2+

Question 121

Cadmium

Answer 121

Cd^2+

Question 122

Mercury(I)

Answer 122

Hg2^2+

Question 123

Ammonium

Answer 123

NH4^+

Question 124

Nitrite

Answer 124

NO2^-

Question 125

Nitrate

Answer 125

NO3^-

Question 126

Sulfite

Answer 126

SO3^2-

Question 127

Hydrogen sulfate

Answer 127

HSO4^-

Question 128

Hydroxide

Answer 128

OH^-

Question 129

Cyanide

Answer 129

CN^-

Question 130

Phosphate

Answer 130

PO4^3-

Question 131

Hydrogen phosphate

Answer 131

HPO4^2-

Question 132

Dihydrogen phosphate

Answer 132

H2PO4^-

Question 133

Thiocyanate

Two answers

Answer 133

NCS^- or SCN^-

Question 134

Carbonate

Answer 134

CO3^2-

Question 135

Hydrogen carbonate

Answer 135

HCO3^-

Question 136

Hypochlorite

Two answers

Answer 136

ClO^- or OCl^-

Question 137

Chlorite

Answer 137

ClO2^-

Question 138

Chlorate

Answer 138

ClO3^-

Question 139

Perchlorate

Answer 139

ClO4^-

Question 140

Acetate

Answer 140

C2H3O2^-

Question 141

Permanganate

Answer 141

MnO4^-

Question 142

Dichromate

Answer 142

Cr2O7^2-

Question 143

Chromate

Answer 143

CrO4^2-

Question 144

Peroxide

Answer 144

O2^2-

Question 145

Oxalate

Answer 145

C2O4^2-

Question 146

Thiosulfate

Answer 146

S2O3^2-

Question 147

Hydrofluoric acid

Answer 147

HF

Question 148

Hydrochloric

Answer 148

HCl

Question 149

Hydrobromic acid

Answer 149

HBr

Question 150

Hydroiodic acid

Answer 150

HI

Question 151

Hydrocyanic

Answer 151

HCN

Question 152

Hydrosulfuric acid

Answer 152

H2S

Question 153

Nitric acid

Answer 153

HNO3

Question 154

Nitrous acid

Answer 154

HNO2

Question 155

Sulfuric acid

Answer 155

H2SO4

Question 156

Sulfurous acid

Answer 156

H2SO3

Question 157

Phosphoric acid

Answer 157

H3PO4

Question 158

Acetic acid

Answer 158

HC2H3O2