Respuesta :
chemical bonding allows each atom involved in the bond to fill its outer shell.
Chemical Bonds
Atomic or elemental bonds depend on the energy level in which the outermost electron e- or e- resides.
The first shell, the innermost level, can hold up to two electrons.
The second can hold up to 8 electrons.
The third can hold up to 8 electrons.
An atom
is stable or non-reactive if the outermost energy level (shell) holds the maximum number of electrons. It does not bond with other atoms. Does not form chemical bonds,
or compounds.
To become stable, atoms gain, lose, or share electrons to complete their outermost energy levels (electron shells).
octet rule because levels 2 and 3 need 8 electrons to be stable.
Look at the outermost electron shells (energy levels).
VALENCE
The number of electrons in the outer energy plane (shell) determines (tells) the valence of the atom.
Having 8 electrons in the outermost shell (the octet rule) determines the valence of the atom (it's a number).
Note: The "group number" in the periodic table indicates the number of electrons in the outermost shell. From this we can read how many electrons the atom must lose or gain to reach 8.
The valence is the number of electrons an atom loses or gains in order to have a perfect outer shell (it is always the minimum number).
Learn more about chemical bonding here : https://brainly.com/question/819068
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