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| 1. |
Read the following statements carefully:1.In a spectacular discovery, the XENON collaboration publicly announced the discovery that xenon-124, an isotope of the element Xenon, is fundamentally unstable.2.Its half-life is 1.8 × 1022 years: more than 1 trillion times the present age of the Universe.3.It’s the longest half-life humanity has ever measured directly, and its implications for the nature of reality couldn’t be more profound.Which of the above statements is/are correct? |
| A. | Only 1 |
| B. | Only 1 and 2 |
| C. | Only 1 and 3 |
| D. | Only 2 and 3 |
| E. | All are correct |
| Answer» F. | |