Question

How many double covalent bonds are there in a molecule of `CO_2`?

Answer 1

`"Two......"`

Explanation:

The central carbon is `"sp-hybridized"`, and the terminal oxygens are `"sp"^2-"hybridized"`, i.e. `O=C=O`. And so there are `2xxC-O` double bonds....

How many in acetylene, `H-C-=C-H`? How many single bonds?