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An atom in which the outermost energy level is more than half full tends to fill its outermost energy level by adding one or more needed electrons. Such an atom forms a negative ion.
valence electrons are the electrons in the outermost energy level
The outermost principle energy level for strontium is the 5th energy level.
Helium only needs 2 valence electrons to have a filled outermost energy level.
Valence electrons are the electrons in the outermost energy level.
An atom in which the outermost energy level is more than half full tends to fill its outermost energy level by adding one or more needed electrons. Such an atom forms a negative ion.
Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.
Halogens have six valence electrons in the outermost energy level.
valence electrons are the electrons in the outermost energy level
Outermost energy level is full if there are 8 electrons in the valence shell.
4th energy level.
The chloride ion (Cl-) has 8 electrons on the outermost energy level.
An atom with an incompletely filled outermost energy level is likely to be reactive. This is because it wants to acquire a filled outermost energy level.
Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.
The outermost principle energy level for strontium is the 5th energy level.
A neutral atom of magnesiumhas two electronsin its outermost energy level
Noble gases are unreactive with the outermost energy level full.