This value could vary from element to element and atoms could have 1 to 8 valence electrons.
Most atoms have either 2 or 8 electrons in their outermost energy level, also known as the valence shell. This outer shell is important for determining an atom's chemical properties and how it bonds with other atoms to form molecules.
Except for hydrogen,Helium,Lithium,Beryllium and Boron, every element requires 8 electrons to fill its outermost shell.
8 valance electrons
8 electrons
8
10
Carbon's outermost energy level contains 4 electrons, and it needs 4 more electrons to have this energy level filled (total of 8 electrons).
Aluminum has 3 electrons in its outermost energy level.
Sulfur has 6 electrons in its outermost energy level.
A neutral sulfur atom has 6 electrons in its outermost energy level. Sulfur has 16 electrons, with 2 electrons in the first energy level, 8 electrons in the second energy level, and 6 electrons in the third and outermost energy level.
8
Atoms can fill their outermost energy level by either gaining electrons from other atoms or by sharing the outermost electrons with another atom.
They can either gain, share, or lose electrons to have a full energy level
8
8
Carbon's outermost energy level contains 4 electrons, and it needs 4 more electrons to have this energy level filled (total of 8 electrons).
valence electrons are the electrons in the outermost energy level
Halogens have six valence electrons in the outermost energy level.
they need to either gain or lose electrons to create an octet. It depends on the atom. an octet is when an atom has a full outermost energy level
Calcium atoms have 8 electrons in the second energy level. However, they are not the valence electrons. The outermost electrons in a calcium atom in the ground state are 2 4s electrons. So calcium atoms in the ground state have 2 valence electrons in the fourth energy level.
2. the number of electrons on the outermost level is always equal to the group number. Barium is group 2 therefore it's outermost energy level contains 2 electrons
The chloride ion (Cl-) has 8 electrons on the outermost energy level.
The most stable atoms/ions have 8 electrons in their outermost shell.