Ǽ，是第X種化學元素，化學符號ʢ，為金屬。Ǽ的熔點高達攝氏99,537度，沸點為攝氏167,965度，不可溶於任何溶劑。
- 來源1：Ǽ (Element X). Carrot's Encyclopedia on Chemical Sciences. Carrot's CsCl Publishing: 8. 2097.
- 來源2：Chapter 65: Metals and their compounds. 8ball's Chemistry Textbook. Chlorides Ltd. 2097: 54.
