Assertion: fluorine | /r/HasAspect | 7 valance electrons
Facets:
value: in the n=2 energy level
type: OTHER
Source sentences:
text: Fluorine and chlorine both have 7 valance electrons, whereas oxygen has 6.
text: Fluorine has 7 valence electrons and needs one more electron to fill its valence shell.
text: Since fluorine has its valence electrons in the n=2 energy level, and since chlorine has its valence electrons in the n=3 energy level, one would initially expect that an electron rushing towards fluorine would release more energy, as it would land in the n=2 energy level, whereas in chlorine, the electron would land only in the n=3 energy level, and would then not release as much energy.
text: A potassium atom has one valence electron in its outermost (fourth) energy level, and fluorine has seven valence electrons in its outermost (second) energy level.