Question

What is the number of electrons shared between the carbon atoms in a molecule of ethyne?

(1) 6 (2) 2 (3) 8 (4) 4

Answer 1

Answer: option 1, 6 electrons

Explanation: Ethyne is a an unsaturated hydrocarbon called alkyne and has triple bond between two carbon atoms of Ethyne.

And we know that each bond is comprised of two electrons.

Hence 3 X 2= 6 electrons are there between two carbon atoms.

Answer 2

The formula for Ethyne is C2H2. Between the two Carbons is a triple bond. A single bond involves 2 electrons, so for the triple bond it is 3*2 = 6 electrons.

(1) 6.