Polyatomic Ions

Question 1

What are polyatomic ions?

Answer 1

An ion made up of two or more atoms covalently bonded and act as a single unit.

They can have either a negative or positive charge.

They cannot be neutral.

Question 2

What are the suffix’s for poly atomic ions that contain oxygen?

Answer 2

Ite/Ate.

Question 3

What does the -ate suffix mean?

Answer 3

one more oxygen atom.

Question 4

What does the -ite suffix mean?

Answer 4

one less oxygen atom.

Question 5

What does the -ide suffix mean?

Answer 5

usually it means there is no oxygen atom in the ion.

Question 6

Order from none to most oxygen

Answer 6

-Ide, Hypo-ite, -ite, -ate, Per-ate.

Question 7

NO₃

Answer 7

Nitrate (-)

Question 8

NO₂

Answer 8

Nitrite (-)

Question 9

N^-3

Answer 9

Nitride

Don’t forget the negative three charge.

Question 10

SO₄

Answer 10

Sulfate (-2)

Question 11

SO₃

Answer 11

Sulfite (-2)

Question 12

S^-2

Answer 12

Sulfide

Don’t forget the -2 charge.

Question 13

PO₄

Answer 13

Phosphate (-3)

Question 14

PO₃

Answer 14

Phosphite (-3)

Question 15

P^-3

Answer 15

Phosphide.

Don’t forget -3 charge.

Question 16

ClO₄

Answer 16

Perchlorate (-)

Question 17

ClO₃

Answer 17

Chlorate (-)

Question 18

ClO₂

Answer 18

Chlorite (-)

Question 19

ClO₁

Answer 19

Hypochlorite (-)

Question 20

Cl^-

Answer 20

Chloride

Don’t forget -1 charge.

Question 21

BrO₄

Answer 21

Perbromate (-)

Question 22

BrO₃

Answer 22

Bromate (-)

Question 23

BrO₂

Answer 23

Bromite (-)

Question 24

BrO

Answer 24

Hypobromite (-)

Question 25

Br^-

Answer 25

Bromide

Question 26

IO₄

Answer 26

Periodate (-)

Question 27

IO₃

Answer 27

Iodate (-)

Question 28

IO₂

Answer 28

Iodite (-)

Question 29

IO

Answer 29

Hypoidite (-)

Question 30

I^-

Answer 30

Iodide

Don’t forget -1 charge.

Question 31

CO₃

Answer 31

Carbonate (-2)

Question 32

HCO₃

Answer 32

Bicarbonate or
Hydrogen carbonate (-)

Question 33

HSO₄

Answer 33

Bisulfate or Hydrogen sulfate. (-)

Question 34

HSO₃

Answer 34

Bisulfite or Hydrogen Sulfite (-)

Question 35

HPO₄

Answer 35

Biphosphate or hydrogen phosphate (-2)

Question 36

H₂PO₄

Answer 36

Dihydrogen Phosphate (-)

Question 37

What happens when a hydrogen is added to a polyatomic atom.

Answer 37

The charge is reduced since hydrgen forms a +1 charge.

Question 38

HPO₃

Answer 38

hydrogren phosphite (-2)

Question 39

H₂PO₃

Answer 39

Dihydrogen Phosphite.

Question 40

OH

Answer 40

Hydroxide (-)

Question 41

NH₄

Answer 41

Ammonium (+)

Question 41

NH₃

Answer 41

Ammonia

Question 42

C₂H₃O₂

Answer 42

Acetate (-)

Question 43

C₂O₄

Answer 43

Oxalate (-2)

Question 44

CrO₄

Answer 44

Chromate (-2)

Question 45

Cr₂O₇

Answer 45

Dichromate (-2)

Question 46

S₂

Answer 46

Disulfate (-2)

Question 47

S₂O₃

Answer 47

Thiosulfate (-2)

Question 48

What does the prefix Thio mean?

Answer 48

Thio means the Oxygen in a polyatomic ion has been replaced by a sulfur

Ex: SO₄ (Sulfate)–> S₂O₃ (Thiosulfate)

Question 49

MnO₄

Answer 49

Permanganate (-)

Question 50

CN

Answer 50

Cyanide (-)

Question 51

SCN

Answer 51

Thiocyanate (-)

Question 52

O^-2

Answer 52

Oxide

Question 53

O₂^-2

Answer 53

Peroxide

Question 54

O₂^-1

Answer 54

Superoxide

Question 55

N₃^-

Answer 55

Azide

Question 56

N^-3

Answer 56

Nitride

Question 57

BO₃

Answer 57

Borate (-3)

Question 58

H₃O

Answer 58

Hydronium (+)