In acetylene (HCCH) there are three bonds between the two carbons. Is this true or false?
Absolutely true! Acetylene is one of the special hydrocarbons with a molecular formula of C2H2. There is a triple bond between the two carbon atoms, making this hydrocarbon an alkyne. Since the two carbon atoms have a triple bond between them, acetylene's two hydrogen atoms are arranged at either end, giving the molecule a 180 degree linear arrangement. Acetylene was discovered by Sir Humphrey Davey in 1836. It is unstable in it's purest form, and is principally used as a fuel. The molecular formula looks something like this:
(the three vertical marks between the two carbon atoms represent the triple bond)