What is the valency of carbon?

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answer is D.

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Detailed Solution

Concept- Carbon belongs to group 14 and it can form 4 bonds with other atoms in a compound.
Now, the atomic number of carbon is 6 and thus, the electronic configuration of the carbon atom is

1 s^{2} 2 s^{2} 2 p^{2}

.
There are four valence electrons in the valence shell of carbon (includes 2s and 2p). Hence, the valency of the carbon atom is 4.
So, it can be said that carbon exhibits tetravalency. Tetravalence means that the element could only extend its potency to four, or the atom could only form four bonds with other atoms.
The tetravalency of carbon is shown as-

https://www.vedantu.com/question-sets/90bb2422-34b3-469c-88b6-a43e28a4d6808456876277389934129.png

https://www.vedantu.com/question-sets/24c1a554-5920-4031-84ba-483150c65c342736245664772127701.png

Hence, the correct option is (4).

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