Important : Common Ions

Question 1

Definition of cation

Answer 1

+ve ion

Metals

Question 2

Definition of anion

Answer 2

-ve ion

Non-metals

Question 3

Group 1 elements

Answer 3

1+ ions

Question 4

Group 2 elements

Answer 4

2+ ions

Question 5

Group 3 elements

Answer 5

3+ ions

Question 6

Group 7 elements

Answer 6

1- ions

Question 7

Group 6 elements

Answer 7

2- ions

Question 8

Sodium

Answer 8

Na 1+

Question 9

Potassium

Answer 9

K 1+

Question 10

Calcium

Answer 10

Ca 2+

Question 11

Copper ( II )

Answer 11

Cu 2+

Question 12

Iron ( II )

Answer 12

Fe 2+

Question 13

Iron ( III )

Answer 13

Fe 3+

Question 14

Zinc

Answer 14

Zn 2+

Question 15

Magnesium

Answer 15

Mg 2+

Question 16

Lead

Answer 16

Pb 2+

Question 17

Ammonium

Answer 17

NH4 1+

Question 18

Ammonia

Answer 18

NH3 1+

Question 19

Barium

Answer 19

Ba 2+

Question 20

Hydrogen

Answer 20

H 1+

Question 21

Lithium

Answer 21

Li 1+

Question 22

Silver

Answer 22

Ag 1+

Question 23

Chloride

Answer 23

Cl 1-

Question 24

Hydroxide

Answer 24

OH 1-

Question 25

Nitrate

Answer 25

NO3 1-

Question 26

Hydrogen carbonate

Answer 26

HCO3 1-

Question 27

Carbonate

Answer 27

CO3 2-

Question 28

Oxide

Answer 28

O 2-

Question 29

Sulfate

Answer 29

SO4 2-

Question 30

Sulfide

Answer 30

S 2-

Question 31

Fluoride

Answer 31

F 1-

Question 32

Iodide

Answer 32

I 1-

Question 33

Bromide

Answer 33

Br 1-

Question 34

What 2 methods can be used to work out formulae from the charge of ions

Answer 34

1. Balance charges | 2. Cross over method