oxidation number for fe in fe3o4 iron ii

1:45

3:34

4:36

5:52

1:43

4:35

کوتاه

کوتاه

11:24

1:45

4:30

6:20

6:01

6:20

6:20

5:35

6:20

6:20

13:12

6:21

6:20

6:21

5:49

4:19

6:20

4:20

6:20

4:14

4:37

6:00

6:20

5:49

5:35

13:12

4:35

8:05

3:51

3:55

5:02