Why is carbon said to provide a “backbone” in many molecules?(1 point)
Carbon atoms have full shells of electrons, allowing electrical signals to pass through them easily.
Carbon atoms have long narrow shapes, allowing many other atoms to attach to them.
Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
Carbon atoms have half-full shells of electrons, allowing electrical signals to pass through them easily.
Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
Which option describes the structure of the electron shells in a neutral carbon atom?(1 point)
The inner shell is complete with four electrons. The outer shell is incomplete with two electrons.
The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.
The inner shell is complete with three electrons. The outer shell is incomplete with three electrons.
The inner shell is incomplete with three electrons. The outer shell is incomplete with three electrons.