ºÝºÝߣ


5. using electromagnets

11 years ago • 686 Views

2

11 years ago • 594 Views

1

11 years ago • 549 Views

5

11 years ago • 492 Views

4

11 years ago • 201 Views

3

11 years ago • 586 Views

6. halides

12 years ago • 2155 Views

4. g7 and g1

12 years ago • 437 Views

3. group 7

12 years ago • 1878 Views

2. group 1

12 years ago • 12037 Views

5.displacement

12 years ago • 1101 Views

1. group 0

12 years ago • 10900 Views

4

12 years ago • 271 Views

3

12 years ago • 1215 Views

2

12 years ago • 723 Views

5

12 years ago • 162 Views

6

12 years ago • 619 Views

1

12 years ago • 249 Views

IB 3.2.2.5

12 years ago • 792 Views

IB 3.2.2.4

12 years ago • 293 Views