Ion formulas

Question 1

ammonium?

Answer 1

NH4 +

Ammonium is a positively charged polyatomic ion.

Question 2

bromide?

Answer 2

Br −

Bromide is a negatively charged ion.

Question 3

caesium?

Answer 3

Cs +

Caesium is a monovalent cation.

Question 4

chloride?

Answer 4

Cℓ −

Chloride is a common anion in many chemical compounds.

Question 5

copper(I)?

Answer 5

Cu +

Copper(I) indicates the copper ion with a +1 charge.

Question 6

cyanide?

Answer 6

CN −

Cyanide is a highly toxic ion.

Question 7

hydrogen?

Answer 7

H +

Hydrogen ion is often referred to as a proton.

Question 8

dihydrogen phosphate?

Answer 8

H2PO4 −

Dihydrogenphosphate is a common anion in biochemistry.

Question 9

lithium?

Answer 9

Li +

Lithium is a monovalent cation.

Question 10

ethanoate (acetate)?

Answer 10

CH3COO −

Acetate is often found in organic compounds.

Question 11

potassium?

Answer 11

K +

Potassium is an essential element for biological systems.

Question 12

fluoride?

Answer 12

F −

Fluoride is commonly used in dental care.

Question 13

rubidium?

Answer 13

Rb +

Rubidium is also a monovalent cation.

Question 14

hydrogen carbonate?

Answer 14

HCO3 −

Hydrogencarbonate is important in maintaining pH balance.

Question 15

silver?

Answer 15

Ag +

Silver ions are used in various applications, including antimicrobial treatments.

Question 16

Hydrogen sulfate?

Answer 16

HSO4 −

Hydrogensulfate is a polyatomic ion derived from sulfuric acid.

Question 17

sodium?

Answer 17

Na +

Sodium is critical for nerve function in living organisms.

Question 18

hydroxide?

Answer 18

OH −

Hydroxide is a common base in chemistry.

Question 19

barium?

Answer 19

Ba 2+

Barium is a divalent cation.

Question 20

iodide?

Answer 20

I −

Iodide is an essential nutrient for thyroid function.

Question 21

calcium?

Answer 21

Ca 2+

Calcium is vital for bone health.

Question 22

nitrate?

Answer 22

NO3 −

Nitrate is commonly found in fertilizers.

Question 23

cobalt(II)?

Answer 23

Co 2+

Cobalt(II) indicates the cobalt ion with a +2 charge.

Question 24

nitrite?

Answer 24

NO2 −

Nitrite is involved in the nitrogen cycle.

Question 25

copper(II)?

Answer 25

Cu 2+ ## Footnote Copper(II) indicates the copper ion with a +2 charge.

Question 26

permanganate?

Answer 26

MnO4 − ## Footnote Permanganate is a strong oxidizing agent.

Question 27

iron(II)?

Answer 27

Fe 2+ ## Footnote Iron(II) is important in hemoglobin.

Question 28

carbonate?

Answer 28

CO3 2− ## Footnote Carbonate is a common anion in geology.

Question 29

lead(II)?

Answer 29

Pb 2+ ## Footnote Lead(II) is often encountered in various compounds.

Question 30

chromate?

Answer 30

CrO4 2− ## Footnote Chromate is used in industrial processes.

Question 31

magnesium?

Answer 31

Mg 2+ ## Footnote Magnesium is essential for many biochemical processes.

Question 32

dichromate?

Answer 32

Cr2O7 2− ## Footnote Dichromate is a powerful oxidizing agent.

Question 33

manganese(II)?

Answer 33

Mn 2+ ## Footnote Manganese(II) plays a role in various enzymatic reactions.

Question 34

hydrogenphosphate?

Answer 34

HPO4 2− ## Footnote Hydrogenphosphate is involved in energy transfer.

Question 35

nickel(II)?

Answer 35

Ni 2+ ## Footnote Nickel(II) is significant in various alloys.

Question 36

oxalate?

Answer 36

C2O4 2− ## Footnote Oxalate can form complexes with metal ions.

Question 37

strontium?

Answer 37

Sr 2+ ## Footnote Strontium is similar to calcium in its properties.

Question 38

oxide?

Answer 38

O 2− ## Footnote Oxide is a common anion in metal oxides.

Question 39

zinc?

Answer 39

Zn 2+ ## Footnote Zinc is essential for many biological functions.

Question 40

sulfate?

Answer 40

SO4 2− ## Footnote Sulfate is a widely distributed ion in nature.

Question 41

aluminium?

Answer 41

Aℓ 3+ ## Footnote Aluminium is a trivalent cation.

Question 42

sulfide?

Answer 42

S 2− ## Footnote Sulfide is often found in minerals.

Question 43

chromium(III)?

Answer 43

Cr 3+ ## Footnote Chromium(III) is used in various industrial applications.

Question 44

sulfite?

Answer 44

SO3 2− ## Footnote Sulfite is used as a preservative in food.

Question 45

iron(III)?

Answer 45

Fe 3+ ## Footnote Iron(III) plays a role in various oxidation-reduction reactions.

Question 46

nitride?

Answer 46

N 3− ## Footnote Nitride is a common anion with applications in ceramics.

Question 47

phosphate?

Answer 47

PO4 3− ## Footnote Phosphate is critical for DNA and RNA synthesis.

Question 48

ammonia

Answer 48

NH3

Question 49

hydrogen peroxide

Answer 49

H202

Question 50

ethanoic acid

Answer 50

CH2COOH

Question 51

hydrochloric acid

Answer 51

HCℓ

Question 52

nitric acid

Answer 52

HNO3

Question 53

carbonic acid

Answer 53

H2CO3

Question 54

sulfuric acid

Answer 54

H2SO4

Question 55

sulfurous acid

Answer 55

H2SO3

Question 56

phosphoric acid

Answer 56

H3PO4