Common polyatomic Ions

Question 1

Mercury(I)

Answer 1

Hg₂²⁺

Question 2

Ammonium

Answer 2

NH₄⁺

Question 3

Nitrite

Answer 3

NO₂⁻

Question 4

Nitrate

Answer 4

NO₃⁻

Question 5

Sulfite

Answer 5

SO₃²⁻

Question 6

Sulfate

Answer 6

SO₄²⁻

Question 7

Hydrogen sulfate (bisulfate)

Answer 7

HSO₄⁻

Question 8

Hydroxide

Answer 8

OH⁻

Question 9

Cyanide

Answer 9

CN⁻

Question 10

Phosphate

Answer 10

PO₄³⁻

Question 11

Hydrogen phosphate

Answer 11

HPO₄²⁻

Question 12

Dihydrogen phosphate

Answer 12

H₂PO₄⁻

Question 13

Thiocyanate

Answer 13

NCS⁻ or SCN⁻

Question 14

Carbonate

Answer 14

CO₃²⁻

Question 15

Hydrogen carbonate (bicarbonate)

Answer 15

HCO₃⁻

Question 16

Hypochlorite

Answer 16

ClO⁻ or OCl⁻

Question 17

Chlorite

Answer 17

ClO₂⁻

Question 18

Chlorate

Answer 18

ClO₃⁻

Question 19

Perchlorate

Answer 19

ClO₄⁻

Question 20

Acetate

Answer 20

C₂H₃O₂⁻

Question 21

Permanganate

Answer 21

MnO₄⁻

Question 22

Dichromate

Answer 22

Cr₂O₇²⁻

Question 23

Chromate

Answer 23

CrO₄²⁻

Question 24

Peroxide

Answer 24

O₂²⁻

Question 25

Oxalate

Answer 25

C₂O₄²⁻

Question 26

Thiosulfate

Answer 26

S₂O₃²⁻

Question 27

Hypobromite

Answer 27

BrO⁻

Question 28

Bromite

Answer 28

BrO₂⁻

Question 29

Bromate

Answer 29

BrO₃⁻

Question 30

Perbromate

Answer 30

BrO₄⁻

Question 31

Hypoiodite

Answer 31

IO⁻

Question 32

Iodite

Answer 32

IO₂⁻

Question 33

Iodate

Answer 33

IO₃⁻

Question 34

Periodate

Answer 34

IO₄⁻

Question 35

What are the predictable Alkali Metals?

Answer 35

Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺

Question 36

What are the predictable Alkaline Earth Metals?

Answer 36

Be²⁺, Mg²⁺, Ca²⁺, Sr²⁺, Ba²⁺

Question 37

What are the predictable transition metals?

Answer 37

Ag⁺, Zn²⁺, Cd²⁺, Al³⁺, Ga³⁺

Question 38

What are the predictable nonmetals?

Answer 38

N³⁻, P³⁻, O²⁻, S²⁻, F⁻, Cl⁻, Br⁻, I⁻

Question 39

What are the diatomic molecules?

Answer 39

Brinclhof (7) Br₂ (l), I₂ (s), N₂ (g), Cl₂ (g), H₂ (g), O₂ (g), F₂ (g)