Question

What is the total number of electron pairs that are shared between the two carbon atoms in a molecule of ethyne?

(1) 1 (3) 3
(2) 2 (4) 4

Answer 1

The total number of electron pairs that are shared between the two carbon atoms in a molecule of ethyne is 3.

Answer 2

Answer : The correct option is, (3) 3

Explanation :

The given molecule is, Ethyne

As we know that ethyne is an unsaturated hydrocarbon which contains triple bonds between the carbon-carbon atoms.

In unsaturated compounds, there are less number of hydrogen bonded with the carbon atoms.

The formula of ethyne molecule is,
`C_2H_2`. In this molecule, there are triple bond is present between the two carbon atoms that means there are 3 pair of electrons present between the two carbon atoms.

Hence, there are 3 number of electron pairs that are shared between the two carbon atoms in a molecule of ethyne.

The structure of ethyne are shown below.