| 词汇 |
Francium in a sentence (esp. good sentence like quote, proverb...) |
正文 |
1. The half - life of francium is 22 minutes.
2. Because Francium is mainly only found synthetically in laboratory research, it has no known use outside of the laboratory.
3. Even Francium's most stable isotope, Francium - 223 only has a half - life of 22 minutes.
4. Francium is the densest of the Alkali Metals and also radioactive.
5. Any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium).
6. So little is known about it, because there is only about 1 ATOM OF FRANCIUM IN A CUBIC FOOT OF URANIUM ORE!
7. Gallium is solid at room temperature but will melt if held in your hand, caesium (Cs), and francium (Fr) ?the second rarest naturally occurring element, can also be liquid at or near room temperature.
8. The cesium-radon period also includes the lanthanides, and the period beginning with francium includes the actinides.
| 随便看 |
- Labor cost in a sentence (esp. good sentence like quote, proverb...)
- Hypertonicity in a sentence (esp. good sentence like quote, proverb...)
- Long term storage in a sentence (esp. good sentence like quote, proverb...)
- Major company in a sentence (esp. good sentence like quote, proverb...)
- Both A and B in a sentence (esp. good sentence like quote, proverb...)
- Dark-coloured in a sentence (esp. good sentence like quote, proverb...)
- Gulf of guinea in a sentence (esp. good sentence like quote, proverb...)
- Flagellated in a sentence (esp. good sentence like quote, proverb...)
- Turn-up in a sentence (esp. good sentence like quote, proverb...)
- Have no business in a sentence (esp. good sentence like quote, proverb...)
- Wrongness in a sentence (esp. good sentence like quote, proverb...)
- Ground plan in a sentence (esp. good sentence like quote, proverb...)
- Vasopressin in a sentence (esp. good sentence like quote, proverb...)
- Stun gun in a sentence (esp. good sentence like quote, proverb...)
- Gregorian chant in a sentence (esp. good sentence like quote, proverb...)
- Toxic gas in a sentence (esp. good sentence like quote, proverb...)
- Marly in a sentence (esp. good sentence like quote, proverb...)
- Word picture in a sentence (esp. good sentence like quote, proverb...)
- Organdie in a sentence (esp. good sentence like quote, proverb...)
- Harmful substance in a sentence (esp. good sentence like quote, proverb...)
- Attache case in a sentence (esp. good sentence like quote, proverb...)
- Mandara in a sentence (esp. good sentence like quote, proverb...)
- Without pause in a sentence (esp. good sentence like quote, proverb...)
- Ham-handed in a sentence (esp. good sentence like quote, proverb...)
- Outwent in a sentence (esp. good sentence like quote, proverb...)
|