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!
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.
The outer shell is called the valence shell
Sulfur has 6 outer valence electrons.
These electrons are called "outershell electrons" or "valence electrons."
If you're asking how will an atom with 5 valence electrons will achieve a full set of valence electrons, then the answer would be that they bond with other atoms to gain a full set of the valence electrons by sharing or gaining 3 electrons.
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.
Carbon needs 4 electrons to fill up its outer shell. It has 4 valence electrons and can achieve a full octet by gaining 4 more electrons.
The outer shell is called the valence shell
Sulfur has 6 outer valence electrons.
The calcium atom (Ca) loses two valence electrons to form a calcium ion (Ca2+).
Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.
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.
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.
valence electrons are the electrons on the outer-most shell of electrons
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.
Sulfur has 6 valence electrons. To achieve 8 valence electrons, sulfur must gain 2 electrons to fill its outer shell and satisfy the octet rule.
Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.