# Stability of Allenes and Alkynes,

In Allenes, the $$\ce{C=C=C}$$ structure makes sure that the $$p$$-orbital of central carbon overlaps with 2 other carbons and the $$p$$-orbital of central carbon spreads out over the 3 carbons.

In Alkynes, the $$\ce{C#C-C}$$ structure makes sure that the energy released during formation of alkynes.
I also read that more the number of non-delocalized $$\pi$$-electrons on an atoms, the lesser its stability, though I do not know why.

When, it comes to comparing Allenes and their isomeric Alkynes,it has always been stated that "Allenes are more stable than Alkynes".

One reason I found was that $$\pi$$-electrons in Allenes are less strongly bound than those in Alkynes.

1. Why are $$\pi$$-electrons less strongly bound? If the reason in incorrect, what is the actual reason?

2. Why is it that as the number of non-delocalized $$\pi$$-electrons increases on a carbon, the smaller its stability?