MCQOPTIONS
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| 1. |
A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series._x005F_x000D_ Hydrogen, Helium, Lithium, ? |
| A. | Beryllium |
| B. | Boron |
| C. | Carbon |
| D. | Nitrogen |
| Answer» B. Boron | |