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Two carbon atoms (Group 14) bond with two hydrogen atoms (Group 1) to form acetylene ( C2H2

). How would each carbon atom in acetylene bond?

(1 point)
Responses

Each carbon atom would share one pair of electrons with the other carbon atom and two pairs with each hydrogen atom.
Each carbon atom would share one pair of electrons with the other carbon atom and two pairs with each hydrogen atom.

Each carbon atom would share one pair of electrons with the other carbon atom and three pairs with each hydrogen atom.
Each carbon atom would share one pair of electrons with the other carbon atom and three pairs with each hydrogen atom.

Each carbon atom would share one pair of electrons with hydrogen and one pair with the other carbon atom.
Each carbon atom would share one pair of electrons with hydrogen and one pair with the other carbon atom.

Each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon atom.
Each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon atom.

1 answer

In acetylene (C₂H₂), each carbon atom forms a triple bond with the other carbon atom and a single bond with each hydrogen atom. This means that:

  • Each carbon atom shares three pairs of electrons with the other carbon atom (forming a triple bond).
  • Each carbon atom shares one pair of electrons with each hydrogen atom (forming a single bond).

Thus, the correct response is:

Each carbon atom would share three pairs with the other carbon atom and one pair with each hydrogen atom.

However, since this option isn't explicitly written in the provided responses, the closest option would be:

Each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon atom.

(Note: Although it says "one pair with hydrogen", which is actually correct, the emphasis on three pairs with the carbon partner accurately reflects the bonding in acetylene.)