ionic charges and formulae of ionic compounds

Question 1

sulfide

Answer 1

S 2-

Question 2

bromide

Answer 2

Br 1-

Question 3

sodium

Answer 3

Na 1+

Question 4

calcium

Answer 4

Ca 2+

Question 5

lithium

Answer 5

Li 1+

Question 6

hydroxide

Answer 6

OH 1-

Question 7

carbonate

Answer 7

CO3 2-

Question 8

ammonium

Answer 8

NH4 1+

Question 9

zinc

Answer 9

Zn 2+

Question 10

magnesium

Answer 10

Mg 2+

Question 11

oxide

Answer 11

O 2-

Question 12

phosphate

Answer 12

PO4 3-

Question 13

chloride

Answer 13

Cl 1-

Question 14

phosphide

Answer 14

P 3-

Question 15

sulfate

Answer 15

SO4 2-

Question 16

potassium

Answer 16

K 1+

Question 17

silver

Answer 17

Ag 1+

Question 18

nitrate

Answer 18

NO3 1-

Question 19

hydrogen

Answer 19

H 1+

Question 20

fluoride

Answer 20

F 1-

Question 21

hydrogen carbonate

Answer 21

HCO3 1-

Question 22

iodide

Answer 22

I 1-

Question 23

aluminium

Answer 23

Al 3+

Question 24

nitride

Answer 24

N 3-

Question 25

-ate -ide

Answer 25

-ate has oxygen -ide doesnt

Question 26

zinc nitrate

Answer 26

Zn(NO3)2

Question 27

lithium hydrogen carbonate

Answer 27

LiHCO3

Question 28

aluminium carbonate

Answer 28

Al2(SO4)4

Question 29

aluminium sulphate

Answer 29

Al2(SO4)4

Question 30

aluminium hydroxide

Answer 30

Al(OH)3

Question 31

ionic compounds overall charge

Answer 31

should have no overall charge

Question 32

non variable elements

Answer 32

s, 1st row of p and group 0 blocks are all non variable elements. for variable charges we use stock notation (roman numerals) eg iron ii is Fe 2+. for simple ions the stock is equal to the charge.