MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of the following is hydrogen s electronic configuration? |
| A. | 1s<sup>1</sup> |
| B. | 1s<sup>2</sup> |
| C. | 2s<sup>1</sup> |
| D. | 2s<sup>2</sup> |
| Answer» B. 1s<sup>2</sup> | |