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Significats de francium en anglès
Chemical element with symbol Fr and atomic number 87.
Termes relacionats
Ús de francium en anglès
1
A similar sample of francium would hang on for just twenty minutes.
2
Funnily enough, astatine is at the same time far more robust than francium.
3
Because many radioactive elements around uranium happen to decay into francium as they disintegrate.
4
Okay, sorry for not getting straight A's in francium class.
5
At the same time, francium shuttles atoms away from astatine, causing astatine to remain rare.
6
Of course, an island of stability implies a stretch of submerged stability- astretchcentered on francium.
7
This makes francium (and astatine, for similar reasons) highly unstable.
8
If there's a "trench of instability," francium is gargling bubbles at the bottom of the Mariana.
9
And it stands to reason that adding more protons would increase electric repulsion, making atoms heavier than francium even weaker.
10
For instance, at least twenty to thirty ounces of astatine's near neighbor on the periodic table, francium, exist at any moment.
11
In other words, the path of many decaying atoms leads to a short layover on francium-hencethe twenty to thirty ounces of it.
12
Francium has eighty-seven protons, none of which want to touch.
13
"Because in order to make the charm, we need francium," Thomas answered.
14
"And this francium person can't come to the charm-making party or what?"
15
(The current flash-mob record for francium is ten thousand atoms.)
16
A similar sample of francium would hang on for just twenty minutes.
Sobre aquest terme
Col·locacions frequents
Francium a través del temps