The valence shell is the outermost shell...and an atom can only have one outer shell.
The value of 'n' for the valence shells is the number of shells that specific atom has
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).
the valence electrons
Electrons in the outermost orbitals of an atom. They determine the chemical reactivity of an atom and are the primary electrons that participate in chemical reactions.
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).
There are 7 valence electrons in a chlorine atom. The atomic number of chlorine is 17, which means it has an electron configuration of 2,8,7. This shows it has 3 shells of electrons, with 7 in the outer level.
Radium has seven electron shells; the valence of radium is 2+.
An atom stripped of its valence electrons, so that its remaining electrons are all in closed shells.
An atom stripped of its valence electrons, so that its remaining electrons are all in closed shells.
Around the nucleus of atoms circulate electrons. They are in shells. The electrons in empty shells are called valence shells. Now, if a shell isn't full, only partly, an atom will want to fill it. Hence, it will connect with an atom with too many electrons. Nature in general abhors energy and will always try to minimize it. It is energetically favorable for atoms with too many electrons to bond with atoms with too few in the valence orbit/shell. Sometimes it is more energetically favorable to share electrons. This type of bond is a covalent bond.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
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