alkaline earth metals

8:20

5:48

8:49

1:37

16:01

5:29

5:20

5:46

26:34

4:20

5:56

11:51

8:56

7:17

16:50

24:51

40:32

4:21

44:34

3:22

9:57

31:22

3:42

23:19

10:53

2:07:29

6:12

4:36

4:49

24:09

11:37

00:53

19:25

3:01

7:18

26:07

9:42

33:16

8:32

10:25

6:33

3:31

15:15

51:17

3:54

46:24

3:36

18:28

3:51

1:05:19

3:51

59:35

1:09

3:31

16:25

3:19

24:04

15:30

1:31:33

10:36