Question

If a carbon atom is bonded to two hydrogen atoms and two carbon atoms, what type of bond must exist between the carbon atoms?

Answer 1

A double bond must exist between two carbon atoms if bonded to two hydrogen atoms. This is because the two carbon atoms share electrons and are in itself a covalent bond. Because they are bonding to the hydrogen atoms it is a double bond.I hope that my answer is helpful! Let me know if you need something more :)

Answer 2

Answer: A single covalent bond is present between the carbon atoms.

Explanation:

Carbon is the 6th element of the periodic table. The electronic configuration of this element is: $1s^22s^22p^2$

This element has 4 valence electrons and to attain stability, it cannot gain 4 electrons nor it can loose 4 electrons. Thus, it has to share 4 electrons in order to attain stability. Thus, this element forms covalent bond.

A covalent bond is formed by the sharing of electrons between two atoms.

In the question, it is given that carbon is bonded to 2 hydrogen atoms and two carbon atoms. Thus, the bond between the carbon atoms will be a single covalent bond.