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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).

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Do noble gases have valence shells?

Yes they have eight electrons in their valence shells. This is why they are not reactive. All elements have valence shells.


Does carbon have three electrons in its valence shells yes or no?

No. Carbon has 4 electrons in its outer shell (valence shell).


What is the number of valence electrons in selenium?

Selenium has 6 electrons in its outermost shell.


What are valence and electrons?

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).


Can nonmetals gain electrons to fill their valence shells?

Yes, nonmetals can gain electrons to fill their valence shells. By doing so, they can achieve a stable electron configuration, usually by reaching a full outer shell of electrons (usually 8 electrons, except for hydrogen and helium which only need 2 electrons).


How many does hydrogen electrons in the outer shells?

Hydrogen has only one valence electrons.


What is different in number of shells in magnesium and sulphur?

There are no difference in the number of shells in magnesium and sulphur. Both elements contain 3 shells. However, the total number of electrons in the shells are different. Magnesium has 12 electrons in its shells whereas sulphur has 16 electrons in its shell. In addition, the electrons in the valence shell (outermost shell) are also different. Magnesium has 2 electrons in its valence shell whereas sulphur has 6 electrons in its valence shell.


How many valence shells in beryllium?

Beryllium has one valence shell containing two electrons.


Are noble gases valence shells full of electrons.?

Yes, they're filled up with 8 electrons except for Helium which as only 2 valence electrons


How many valence electrons does is have argon?

Argon is a noble gas. All noble gases have stable outer shells with 8 valence electrons (with the exception of He, which as 2).


Why are noble gases are non reactive?

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.


Electrons found in the outer shell or orbital are called?

These electrons are called "outershell electrons" or "valence electrons."