Why my teacher said that carbon can't form a quadriple covalent bonds with another carbon?

Question

Please answer in the term of the ability of carbon to bind with other organic elements to form organic compound....
in ethene, they form a double covalent bond. in ethyne they form a triple covalent bond... is it because if they form a quadriple covalent bond, they will have no extra electrons that they can't form an organic compound....
or is the formation of this bond simply need too much energy to be released in order to form bonds... or are there any other reasons for this?

Answer 1

The only atom available with 4 valence electrons is Carbon! Any 2 electrons have opposite directions in their individual rotations. If all the 4 valence electrons were to be on a single plane to form a quadruple bond, then there is no chance for the atom to be spherical so as to allow any number of electrons to come to a single plane. But, any atom is strictly spherical to allow a maximum surface area for the revolution of electrons round it. So, there is no chance for all the even number of valence electrons of any Carbon atom to fall in a single plane with another Carbon atom, both being spherical. We, living things, are all lucky to have at least one electron from all Carbon atoms with freedom, as in the case of Ethyne, to bond with other atom than Carbon so that all the biomolecules utilize the availability of catenating Carbon atoms!

Answer 2

Its a question of stability. A quad bond between 2 carbons can exist only temporarily. Carbon can form compounds that look like a quad bond.

I am familiar with SiC, silicon carbide. This material is used extensively in grinding and is a strong abrasive. Both Silicon and Carbon have 4 valence electrons, so it would seem to be a legit. quad bond. But in reality, it turns out that this compound is a covalent network structure, similar to diamondds.

Answer 3

When I look at the structure of a diamond crystal, it sure looks like quadruple covalent bonds to me! Oh, wait! That's four double bonds, isn't it? You mean a single quadruple covalent bond between two carbon atoms, forming the molecule C2, right? That is a very good question. Hopefully someone else has a good explaination....

Answer 4

No, however the reason being complicated. commonly the occasion given is that the 4 covalent bonds are pointing in 4 distinctive instructions, so that they could't all experience up on the comparable time. i'm useful the genuine answer includes some fancy math. yet for many individuals, the respond is a elementary 'no'.

Answer 5

if you listened to your teacher, you would know.