Polyatomic Ions

Question 1

What is the formula for a hydrogen ion?

Answer 1

OH-

Question 2

OH-

Answer 2

Hydrogen / Hydroxide

Question 3

What are the formulas for the nitrogen ions?

Answer 3

1. NH4+
2. NO3-
3. NO2-

Question 4

Ammonium

Answer 4

NH4+

Question 5

NH4+

Answer 5

Ammonium

Question 6

Nitrate

Answer 6

NO3-

Question 7

NO3-

Answer 7

Nitrate

Question 8

Nitrite

Answer 8

NO2-

Question 9

NO2-

Answer 9

Nitrite

Question 10

What are the formulas for the chlorine ions?

Answer 10

1. ClO4-
2. ClO3-
3. ClO2-
4. ClO-

Question 11

Perchlorate

Answer 11

ClO4-

Question 12

ClO4-

Answer 12

Perchlorate

Question 13

Chlorate

Answer 13

ClO3-

Question 14

ClO3-

Answer 14

Chlorate

Question 15

Chlorite

Answer 15

ClO2-

Question 16

ClO2-

Answer 16

Chlorite

Question 17

Hypochlorite

Answer 17

ClO-

Question 18

What are the formulas for the carbon ions?

Answer 18

1. CO3^2-
2. HCO3-
   3.CN-
3. C2 H3 O2-

Question 19

Carbonate

Answer 19

CO3^2-

Question 20

CO3^2-

Answer 20

Carbonate

Question 21

Hydrogen Carbonate (Bi-carbonate)

Answer 21

HCO3-

Question 22

HCO3-

Answer 22

Hydrogen Carbonate (Bi-carbonate)

Question 23

Cyanide

Answer 23

CN-

Question 24

CN-

Answer 24

Cyanide

Question 25

Acetate

Answer 25

C2 H3 O2-

Question 26

C2 H3 O2-

Answer 26

Acetate

Question 27

What are the formulas for the sulfur ions?

Answer 27

1. SO4^2-
2. HSO4-
   3.SO3^2-
3. HSO3-

Question 28

Sulfate

Answer 28

SO4^2-

Question 29

SO4^2-

Answer 29

Sulfate

Question 30

Hydrogen Sulfate (Bi-Sulfate)

Answer 30

HSO4-

Question 31

HSO4-

Answer 31

Hydrogen Sulfate (Bi-Sulfate)

Question 32

Sulfite

Answer 32

SO3^2-

Question 33

SO3^2-

Answer 33

Sulfite

Question 34

Hydrogen Sulfite (Bi-Sulfite)

Answer 34

HSO3-

Question 35

HSO3-

Answer 35

Hydrogen Sulfite (Bi-Sulfite)

Question 36

What are the formulas for the phosphorus ions?

Answer 36

1. PO4^3-
2. HPO4^2-
   3.H2 PO4 -
3. PO3^3-

Question 37

Phosphate

Answer 37

PO4^3-

Question 38

PO4^3-

Answer 38

Phosphate

Question 39

Hydrogen phosphate

Answer 39

HPO4^2-

Question 40

HPO4^2-

Answer 40

Hydrogen Phosphate

Question 41

Di hydrogen Phosphate

Answer 41

H2 PO4 -

Question 42

H2 PO4 -

Answer 42

Di hydrogen Phosphate

Question 43

Phosphite

Answer 43

PO3^3-

Question 44

PO3^3-

Answer 44

Phosphite

Question 45

Polyatomic Ions

Answer 45

Groups of ions with an overall charge that behaves as one unit.

Question 46

How do you complete the criss cross method for writing an ionic compound formula?

Answer 46

1. Write the charges on both elements.
2. Switch the numbers.
3. Divide the numbers by 2.
4. Write the new formula.

Question 47

Are polyatomic ions usually metals or nonmetals?

Answer 47

Nonmetals

Question 48

What charges do polyatomic ions usually have?

Answer 48

1-, 2-, 3-

Question 49

What is the one polyatomic ion that does not have a negative charge?

Answer 49

Ammonium (NH4+)

Question 50

What do the most common polyatomic ions end in?

Answer 50

-ate

Question 51

What do the polyatomic ions that have one less oxygen end in?

Answer 51

-ite

Question 52

What two ions are the exceptions to the polyatomic ion rules?

Answer 52

1. Cyanide (CN-)
2. Hydroxide (OH-)

Question 53

When you add a H+ to a polyatomic ion, what do you add to its charge?

Answer 53

1+