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Question: Davy and Faraday proved A.Diamond is a form of carbon B.The bond lengths of carbon containing c...

Davy and Faraday proved
A.Diamond is a form of carbon
B.The bond lengths of carbon containing compounds are always equal
C.The strength of graphite is minimum compared to platinum
D.Graphite is very hard

Explanation

Solution

A chemical compound is a substance made up of several similar molecules (or molecular entities) that are linked together by chemical bonds and contain atoms from multiple elements. As a result, a molecule made up of only one element's atoms is not a compound.

Complete answer:
Diamond - Allotropes are crystalline forms of the same element that exist in two different forms. Diamond and graphite are examples of allotropes. Diamond is one of the hardest known materials, appreciated for its gleaming translucent and highly reflective crystals. Diamond is used in industry for cutting, grinding, sawing, and drawing wire, in addition to manufacturing beautiful jewels.
Bond lengths - Bond length, also known as bond distance in molecular geometry, is the average distance between the nuclei of two bound atoms in a molecule. It is a property of a bond between atoms of definite types that can be transferred and is generally independent of the remainder of the molecule.
Graphite - Graphite, sometimes known as plumbago, is a crystalline form of the element carbon with atoms organized in a hexagonal pattern. It is the most stable form of carbon under ordinary conditions and occurs naturally in this form. It turns to diamond at high pressures and temperatures.
Platinum - Platinum is a chemical element with atomic number 78 and the symbol Pt. It's a silverish-white transition metal that's dense, malleable, ductile, and very unreactive. It gets its name from the Spanish word platino, which means "small silver."
Diamond is a form of carbon, as Davy and Faraday demonstrated.
So, the final answer is option (A) Diamond is a form of carbon.

Note:
An element is a pure substance made up entirely of atoms with the same number of protons in their atomic nuclei, as defined by chemistry. Chemical elements, unlike chemical compounds, cannot be broken down chemically into simpler molecules.