MCQOPTIONS
Saved Bookmarks
| 1. |
Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively ? |
| A. | Lithium and mercury |
| B. | Lithium and osmium |
| C. | Aluminium andosmium |
| D. | Aluminium and mercury |
| Answer» C. Aluminium andosmium | |