MCQOPTIONS
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| 1. |
Which element is placed in the 5th Period and IIA Group of the periodic table? |
| A. | Lead (At no 82) |
| B. | Tellurium (At no 52) |
| C. | Barium (At no 56) |
| D. | Strontium (At no 38) |
| Answer» E. | |