MCQOPTIONS
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MCQOPTIONS
| 1. |
How many groups and periods are present in the Modern Periodic Table?_x005F_x000D_ |
| A. | 8 groups and 6 periods |
| B. | 18 groups and 9 periods |
| C. | 18 groups and 7 periods |
| D. | 7 groups and 10 periods |
| Answer» D. 7 groups and 10 periods | |