Out of alkanes, alkenes and alkynes....the energy required to break the triple bond is the greatest!.. then which of them is the strongest and the most stable?

Out of alkanes, alkenes and alkynes; alkynes are the most strongest since they contain CC bond; strength of CC bond is more than that of C=C double bond and C-C single bond. So, these are the most stable and strong as compared to alkenes and alkanes. Alkanes contain weak covalent bond binded by weak vander waal forces whereas alkenes are very reactive because of presence of (pi) bond.