BUTSS
Two electrons from each element are shared; the total is four electrons.
Barium can typically form two bonds with other elements. It has two valence electrons that it can share or donate in chemical reactions.
a carbon atom can share electrons with up to four other atoms.
Nitrogen can form up to three covalent bonds. It has 5 valence electrons in its outer shell, so it can share electrons with other atoms to complete its octet.
Silicon (Si) has 0 unpaired electrons. It has a total of 4 valence electrons, which it shares to form covalent bonds with other atoms.
In a reaction u need two valence electrons to gain or share two valence electrons.
not 8
Two electrons from each element are shared; the total is four electrons.
Carbon can share up to 4 valence electrons. This allows it to form stable covalent bonds with other atoms to achieve a full outer shell of electrons.
Barium can typically form two bonds with other elements. It has two valence electrons that it can share or donate in chemical reactions.
In its elemental form, selenium typically forms two covalent bonds. Selenium has six valence electrons in its outer shell, so it can share these electrons with other atoms to form two covalent bonds.
In H2O2, there are two O-H bonds and two O-O bonds, resulting in a total of four bond pairs of electrons.
a carbon atom can share electrons with up to four other atoms.
Nitrogen can form up to three covalent bonds. It has 5 valence electrons in its outer shell, so it can share electrons with other atoms to complete its octet.
Neon (Ne) has 10 core electrons. Core electrons are the electrons in an atom that are not involved in chemical reactions. For neon, the core electrons are the 1s²2s²2p⁶ electrons, which total 10.
4. Carbon has 4 valence electrons and it rarely forms ionic compounds or compounds with fewer than 4 bonds (though it's possible).
This question seems a bit unclear. Perhaps it meant something like: "how many electrons can be shared with carbon atoms?" Anyway, a carbon atom can share 4 electrons with other atoms, including other carbon atoms.