Which of the following properties is NOT exhibited or shown by carbon?

The correct answer is Metallic character.Key PointsCarbon:

• It is a chemical element that is nonmetallic and belongs to Periodic Table Group 14 (IVa).
• In terms of weight, carbon is ranked 19th among the elements that are abundant in the crust of Earth.
• It forms compounds by covalent bond.
• Graphite differs because all of its carbon atoms are sp² hybridized, which results in delocalized free electrons.
• It is tetravalent and can form four covalent bonds.

Additional InformationCovalency:

• It is the process by which one element shares electrons with atoms of the same or distinct elements to become stable.
• It is maximum when atoms with similar electronegativities share electrons.
• Covalency of oxygen is two.

Catenation:

• It is the process by which an element's atoms self-link to form rings and chains.
• Carbon atoms catenate most easily, forming covalent bonds with other carbon atoms to form longer chains and structures.
• Electronic and steric characteristics (i.e., the arrangement of the element's molecular orbitals around the atom) and the ability to form different kinds of double bonds are all factors that influence catenation.

Allotropy:

• It is the ability of an element to exist in different forms.
• The elements that show allotropy are oxygen, phosphorus, sulfur, carbon, and tin.
• Carbon can exist in forms such as diamond, graphite, and fullerenes.