6
Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.
An oxygen atom has eight electrons. The first electron shell can contain two electrons so that shell is filled leaving six electrons left. Since the second electron shell can contain up to eight electrons, the remaining six electrons go into the second shell. Since the second shell is the outermost shell, there are six electron's in the outer energy level.
The electrons on the outermost energy level of the atom are called valence electrons.
8
There are eight electrons in the outermost energy level of a chloride ion.
Oxygen has six valence electrons.
The electronic configuration of oxygen is [He]2s22p4 and it has six valence electrons.
valence electrons are the electrons in the 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.
Halogens have six valence electrons in the outermost energy level.
6 electrons
An oxygen atom has eight electrons. The first electron shell can contain two electrons so that shell is filled leaving six electrons left. Since the second electron shell can contain up to eight electrons, the remaining six electrons go into the second shell. Since the second shell is the outermost shell, there are six electron's in the outer energy level.
It would gain 2 electrons.
The chloride ion (Cl-) has 8 electrons on the outermost energy level.
6 electrons
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 electrons on the outermost energy level of the atom are called valence electrons.