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It depends, most atoms need 8 total valence electrons in their outer shell (some need 2). So subtract the number they have (determined by the group that the element is in) from 8 and that is how many they need to fill their outer shell!

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When a bond is created how many valence electrons are needed to fill an octet?

For most atoms, 8 valence electrons are needed to fill an octet when forming chemical bonds. This typically involves sharing, gaining, or losing electrons to achieve a full outer shell of electrons.


How many electrons are needed to fill up carbons outer shell?

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The calcium atom (Ca) loses two valence electrons to form a calcium ion (Ca2+).


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What are the electrons in the outer most energy level of an atom called?

The electrons in the outermost energy level of an atom are called valence electrons. These electrons are involved in forming chemical bonds with other atoms to achieve a stable configuration.


Which electrons interact to form chemical bonds?

Valence electrons interact to form chemical bonds. These are the electrons in the outermost energy level of an atom, and they are involved in bonding with other atoms to achieve a stable electron configuration.


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valence electrons are the electrons on the outer-most shell of electrons


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Fluorine needs 8 valence electrons to have a filled outer energy level, following the octet rule. Fluorine naturally has 7 valence electrons, so it only requires one more electron to achieve a stable octet configuration.


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How many number of electrons to fill the outer shell of carbon?

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