1. Tardigrade
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  3. Chemistry
  4. Assertion: Carbon atom is tetravalent though it has two unpaired electrons. Reason: Carbon has unique ability to form pπ-pπ multiple bonds with itself like C=C, C≡ C.

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Q. Assertion : Carbon atom is tetravalent though it has two unpaired electrons.
Reason : Carbon has unique ability to form $p\pi-p\pi$ multiple bonds with itself like $C=C, C\equiv C$.

The p-Block Elements

Solution:

In carbon, only $s$ and $p$-orbitals are available for bonding and therefore, it can accommodate only four pairs of electrons around it. This would limit the maximum covalence to four in carbon.
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