What type of overlap is involved in the formation of C-H bonds in acetylene molecules?

Step-by-step solution

The carbon atoms in acetylene ( C₂ H₂ ) exhibit sp hybridization , resulting from two σ bonds (one to hydrogen and one to carbon) and no lone pairs. Each C–H σ bond forms via overlap between a carbon sp hybrid orbital and hydrogen's 1s atomic orbital . Reviewing the overlaps: A) sp^3 – s : characteristic of alkanes B) sp^2 – s : characteristic of alkenes C) sp – s : correct for acetylene's C–H bonds D) sp – sp : describes acetylene's C–C σ bond The C–H bonds in acetylene result from sp – s overlap .