A neutral carbon atom has 6 electrons in the following configuration: 1s2 2s2 2p2
An atom with four valence electrons will typically form four bonds with other atoms to achieve a stable octet configuration. This allows the atom to share or transfer electrons in order to fill its outermost energy level.
There are four pairs of electrons around the central carbon atom of methane. These pairs each consist of one electron originally from the carbon and one from the hydrogen atom bonded to it.Though the question only considers the outer shell of electrons, as that is the only shell used for bonding, it may be useful to remember that in methane the carbon atom has a total of ten electrons around it, due to its two inner electrons.
Each carbon atom (atom number 6) has 6 protons (in nucleus) and 6 electrons (orbited around), the number of neutrons (also in nucleus) may vary from 6 or (less common) 7 or (rarely) 8.
You can NOT have a fraction of an atom. Your question therefore makes no sense and can not have an answer.
Carbon atoms usually form four covalent bonds in carbon compounds. In some kinds of compounds, however, carbon forms a type of bond called "double" or "triple", in which carbon atoms share two (in double bonds) or three (in triple bonds) electrons from each carbon atom in the bond. In such instances it would be preferable to say that each carbon atom in one or more carbon to carbon bonds shares four electrons, rather than forms four bonds. Carbon only rarely if ever forms ionic bonds to another atom, but may do so in alkali metal and alkaline earth metal carbides.
A carbon atom has 4 valence electrons, so two together may have a single, double, or triple bond.
carbon is the smallest tetravalent atom that means it has four unpaired electrons in its exited state,due to smaller size and high electrons density the p- orbitals of carbon may form stable pi bonds so multiple bonding is possible for carbon.
If an atom loses an electron, it will be positively charged. An example may make this clearer. A neutral carbon atom has 6 protons and 6 electrons. If you take away an electron, you will have 6 protons and 5 electrons, for a total charge of +6 -5 = +1.
So carbon has 6 electrons. These fill the 1s orbital. Depending on how it is bonding, it may be 2s2 2p2, but it is more often a hybrid of 2s1, 2p3 (sp3, sp2 and sp hybridisation).
Chlorine has 17 electrons. 7 of its electrons are valence electrons.
A neutral atom of helium has 2 electrons.
A carbon atom can typically only form 4 covalent bonds, but there are rare special cases in which it may form more than 4 to create an expanded octet.