what is the oxidation number of fe3o4

16:36

4:00

1:43

4:00

3:31

5:24

2:26

4:36

5:52

2:28

10:30

9:16

1:42

19:04

16:17

1:05

3:08

14:19

3:39

1:02

2:53

3:27

1:43

2:39

1:54

5:49

1:32

3:51

3:29

1:29

2:42

3:17

کوتاه

2:04

29:55

2:38

14:19

8:22