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Use the periodic table to answer the question.

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 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 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.

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 hydrogen and one pair with the other carbon atom.

1 answer

In acetylene (C2H2), the bonding configuration involves each carbon atom. Each carbon atom forms a triple bond with the other carbon atom, which involves sharing three pairs of electrons. Additionally, each carbon atom forms a single bond (sharing one pair of electrons) with one hydrogen atom.

Thus, the correct answer is:

Each carbon atom would share one pair of electrons with the other carbon atom and three pairs with each hydrogen atom. (Note: The phrasing here seems off. Correctly, they would share three pairs with the other carbon and one pair with each hydrogen).

However, if we choose from the options and assuming some inaccuracies in wording:

  • Each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon atom would be the best fit as it notes 3 pairs with the other carbon despite the incorrect pairing for hydrogen.

The crucial part is the triple bonding between the carbon atoms.