The 6th Carbon atom has 8 electrons.
How to determine electrons?
In a Lewis structure, each dash or line represents a shared pair of electrons between two atoms. When you see the 6th Carbon atom with 4 dashes, it means that this particular carbon atom is involved in four bonds, and each bond contributes two electrons. This is because a single covalent bond involves the sharing of two electrons—one from each participating atom.
So, for the 6th Carbon atom:
Number of Bonds = 4
Number of Electrons contributed by each bond = 2
Total Electrons = Number of Bonds × Number of Electrons per Bond
= 4 × 2
= 8 electrons
Therefore, the 6th Carbon atom, in this context, is associated with 8 electrons due to its involvement in four single bonds.