The value of 'n' for the valence shells is the number of shells that specific atom has
;need the same number of electrons to fill their valece shells ;have the same number of valence electrons
Period number = no. of electron shells. Therefore neon has two shells.
They have filled valence shells. Atoms undergo chemical bonding in order to have filled valence shells by sharing electrons or transferring electrons. Because the noble gases already have filled valence shells, they have no need to react with other elements.
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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).
Yes they have eight electrons in their valence shells. This is why they are not reactive. All elements have valence shells.
Radium has seven electron shells; the valence of radium is 2+.
;need the same number of electrons to fill their valece shells ;have the same number of valence electrons
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Period number = no. of electron shells. Therefore neon has two shells.
Beryllium has one valence shell containing two electrons.
flurine has atomic no. 9 so its electronic configaration is 2,7. Its valance shell has 7 electrons
They have filled valence shells. Atoms undergo chemical bonding in order to have filled valence shells by sharing electrons or transferring electrons. Because the noble gases already have filled valence shells, they have no need to react with other elements.
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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).
All these have one electron in their valence shell.
The valence shell is the outermost shell...and an atom can only have one outer shell.