Polyatomic/Unusual Ions & Elements & Compounds w/ Common Names

Question 1

Name H₃O⁺

Answer 1

hydronium ion

Question 2

Name C₂H₃O₂^-

Answer 2

acetate ion

Question 3

Name MnO₄^-

Answer 3

Permanganate Ion

Question 4

What is the formula of Thiocyanate ion?

Answer 4

SCN^-

Question 5

What is the formula of a silver ion?

(Silver ions always have same charge so it will not be given)

Answer 5

Ag⁺

Question 6

What is the formula of a Hydrogen Carbonate ion?

Answer 6

HCO₃^-

Question 7

What is the formula for a Mecury (I) ion?

Answer 7

Hg₂²⁺

Question 8

Name H^-

Answer 8

hydride ion

Question 9

Name HCN

Answer 9

hydrocyanic acid

Question 10

What is the formula of a Cyanide ion?

Answer 10

CN^-

Question 11

Name Hg₂⁺²

Answer 11

mercury(I) ion

Question 12

Name H₂O₂

Answer 12

hydrogen peroxide

Question 13

Give the formula of
phosphoric acid

Answer 13

H₃PO4

Question 14

What is the formula for azide ion?

Answer 14

N₃^-

Question 15

Name CH₄

Answer 15

methane

Question 16

What is the formula of

acetate ion?

Answer 16

C₂H₃O₂^-

Question 17

Name SO₄^-2

Answer 17

sulfate ion

Question 18

Give the formula of

hydroxide ion

Answer 18

OH^-

Question 19

Name H₂CO₃

Answer 19

carbonic acid

Question 20

Named HN₃

Answer 20

hydrazoic acid

Question 21

Name PO₄^-3

Answer 21

Phosphate Ion

Question 22

Give the formula of

hydronium ion

Answer 22

H₃O⁺

Question 23

Name HSO₄^-

Answer 23

hydrogen sulfate ion

Question 24

What is the formula for a peroxide ion?

Answer 24

O₂^2-

Question 25

Name Zn⁺²

Answer 25

zinc ion NOTE - charge not givcen b/c zinc ions always +2

Question 26

What is the formula of a Mecury (II) ion?

Answer 26

Hg²⁺

Question 27

What is the formula for hydrocyanic acid?

Answer 27

HCN

Question 28

What is the formula of sulfate ion?

Answer 28

SO₄^-2

Question 29

Named Cd⁺²

Answer 29

Cadmium ion NOTE - no charge given b/c cadmium ions are always +2

Question 30

Name H₂SO₄

Answer 30

sulfuric acid

Question 31

What is the formula of a zinc ion? ## Footnote (Zinc ions always have same charge so it will not be given)

Answer 31

Zn⁺²

Question 32

What is the formula for an Ammonium ion?

Answer 32

NH₄⁺

Question 33

What is the formula for a Permanganate ion?

Answer 33

MnO₄^-

Question 34

What is the formula of acetic acid?

Answer 34

HC₂H₃O₂

Question 35

What is the name of HN₃ ?

Answer 35

hydrazoic acid

Question 36

Name Cr₂O₇^-2

Answer 36

dichromate ioin

Question 37

What is the formula of azide ion?

Answer 37

N₃^-

Question 38

Name Ag⁺

Answer 38

Silver ion NOTE - charge not given for silver ions because always +1

Question 39

Give the name of H2PO₄^-

Answer 39

dihydrogen phosphate ion

Question 40

Name H⁺

Answer 40

Hydrogen ion

Question 41

Name HN₃

Answer 41

hydrazoic acid

Question 42

Give the formaula of sulfuric acid

Answer 42

H₂SO₄

Question 43

What is the fomula of hydrogen sulfate ion?

Answer 43

HSO₄^-

Question 44

What is the formula of carbonic acid?

Answer 44

H₂CO₃

Question 45

Name NH_4⁺

Answer 45

ammonium ion

Question 46

Name NH₃

Answer 46

ammonia

Question 47

What is the formula for elemental oxygen

Answer 47

O₂

Question 48

Name H₂PO₄^-

Answer 48

dihydrogen phosphate ion

Question 49

What is the formula of oxide ion?

Answer 49

O^2-

Question 50

What is the formula of carbonate ion?

Answer 50

CO₃^-2

Question 51

What is the formula for Ammonia?

Answer 51

NH₃

Question 52

Name OH^-

Answer 52

Hydroxide ion

Question 53

List the 7 diatomic elements

Answer 53

H₂, N₂, O₂, F₂, Cl₂, Br₂, I₂

Question 54

Name CN^-

Answer 54

Cyanide Ion

Question 55

What is the formula of a Hydrogen ion?

Answer 55

H⁺

Question 56

Name Hg⁺²

Answer 56

mercury(II) ion

Question 57

Give the formula of hydrogen phosphate ion

Answer 57

HPO₄^-2

Question 58

Name NH₄⁺

Answer 58

ammonium ion

Question 59

What is the formula of methane?

Answer 59

CH₄

Question 60

Name HC₂H₃O₂

Answer 60

acetic acid

Question 61

What is the formula of a Hydride ion?

Answer 61

H^-

Question 62

Name CO₃^-2

Answer 62

Carbonate Ion

Question 63

Name CNS^{- (also written as SCN-)}

Answer 63

thiocyanate ion

Question 64

What is the formula of a Chromate ion?

Answer 64

CrO₄^2-

Question 65

Name HPO₄^-2

Answer 65

hydrogen phosphate ion

Question 66

What is the formula of a Dichromate ion?

Answer 66

Cr₂O₇^2-

Question 67

Name HCO₃^-

Answer 67

hydrogen carbonate ion

Question 68

Give the formula of dihydrogen phosphate ion

Answer 68

H₂PO₄^-

Question 69

Name CrO₄^-2

Answer 69

Chromate Ion

Question 70

Give the name of N₂

Answer 70

nitrogen (more accurately "elemental or molecular nitrogen")

Question 71

Name H₃PO₄

Answer 71

phosphoric acid

Question 72

What is the formula of a cadmium ion? ## Footnote (Cadmium ions always have same charge so it will not be given)

Answer 72

Cd⁺²

Question 73

What is the formula of hydrogen peroxide?

Answer 73

H₂O₂