In case of non-transition elements they are not but in case of Transition elements the 2nd last (in d-block) and 3rd last (in f-block) shell also become involved in chemical bonding.
The electrons (especially the valence electrons)
In a Lewis dot structure (also called an electron dot structure) there are no inner electrons and shells shown because Lewis dot structures are usually used to show bonds between elements, and the inner electrons are never usually involved with the bonding of atoms.
inner-shell electrons
The very inner shell of an atom is the 1st shell and can only contain 2 electrons.
2, there is always 2 in the inner shell.
Mostly outer electrons are involved in chemical bonds, however the inner electrons provide magnetic forces and they effect chemical reactions.
Valence electrons are the electrons in the outermost shell of an atom. The ones in the inner shell are known as core electrons.
The electrons (especially the valence electrons)
No, only outer shell electrons participate in chemical bonds.
inner shell electrons : the electrons that are not in the the highest occupied energy level .
Inner shells of electrons are always full and cannot accept any additional electrons. Also, they can not generally lose electrons because the energy require to remove an electron from an inner shell is generally too high to be achieved in a chemical reaction.
Valence electrons are the ones which participate in chemical reactions in some way, either by moving from one atom to another, or by being shared with another atom. They are found in the outer shell of an atom (there are usually inner shells with other electrons that are not valence electrons, although in the lightest elements, there are no inner shells and all electrons are valence electrons).
In a Lewis dot structure (also called an electron dot structure) there are no inner electrons and shells shown because Lewis dot structures are usually used to show bonds between elements, and the inner electrons are never usually involved with the bonding of atoms.
Valence electrons are the ones which participate in chemical reactions in some way, either by moving from one atom to another, or by being shared with another atom. They are found in the outer shell of an atom (there are usually inner shells with other electrons that are not valence electrons, although in the lightest elements, there are no inner shells and all electrons are valence electrons).
No. The outer shell (valence) electrons are not attracted towards the nucleus as strongly as are the inner (core) electrons. This is why they could be traded in and out during chemical reactions, while the core electrons normally could not.
inner-shell electrons
there are 2 electrons in the inner shell of a hydrogen atom.