Question

1. which electron dot formula correctly represents the hydrocarbon acetylene, c₂h₂? c:h:::h:c h:c::c:h h:c:c:h h:c:::c:h

Explanation:

• In acetylene (\(C_{2}H_{2}\)), each carbon atom has 4 valence electrons and each hydrogen has 1 valence electron.
• The carbon - carbon triple bond (\(C\equiv C\)) is represented by three pairs of dots between the carbon atoms.
• Each carbon forms a single bond (one pair of dots) with a hydrogen atom.

Answer:

\(H:C:::C:H\) (the fourth option)