Question: Why is diamond unreactive?

Solution: The structure of diamond is compact and hence it is unreactive. Graphite has an open structure which makes it more prone to chemical attack.

Are Diamonds reactive?

As a gemstone, Diamond’s single flaw (perfect cleavage) is far outdistanced by the sum of its positive qualities. It has a broad color range, high refraction, high dispersion (fire), very low reactivity to chemicals, rarity, and of course, extreme hardness and durability. Diamond is the April Birthstone.

Why is diamond chemically inert?

Diamond has an extremely low thermal expansion, is chemically inert with respect to most acids and alkalis, is transparent from the far infrared through the deep ultraviolet, and is one of only a few materials with a negative work function (electron affinity).

Is diamond most reactive?


Are Diamonds reactive or stable?

Chemical stability

At room temperature, diamonds do not react with any chemical reagents including strong acids and bases. In an atmosphere of pure oxygen, diamond has an ignition point that ranges from 690 °C (1,274 °F) to 840 °C (1,540 °F); smaller crystals tend to burn more easily.

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Why is a diamond hard?

The outermost shell of each carbon atom has four electrons. In diamond, these electrons are shared with four other carbon atoms to form very strong chemical bonds resulting in an extremely rigid tetrahedral crystal. It is this simple, tightly-bonded arrangement that makes diamond one of the hardest substances on Earth.

Why do you think a diamond is so hard and graphite is so soft?

The carbon atoms in graphite appear to bond with weaker intermolecular forces, allowing the layers to move over one another. The weak intermolecular forces are known as the weak Van der Waals forces. Therefore, diamond is hard but graphite is soft and slippery even though both have carbon present in them.

What is the impact resistance of diamond?

The impact diamonds possess exceptional abrasive strength, 1.8 to 2.4 times greater than in synthetic diamonds. The outstanding wear resistance, a large specific surface area and a thermal stability (200–250 °C greater than in synthetic diamonds) are favorable for main technological uses.

What gives diamond its strength and hardness?

The four valence electrons of each carbon atom participate in the formation of very strong covalent bonds. These bonds have the same strength in all directions. This gives diamonds their great hardness. Since there are no free electrons to wander through the structure, diamonds are excellent insulators.

Which is more reactive graphite or diamond?

Graphite is the most stable allotrope of carbon. … Density: Graphite’s specific gravity is 2.3, which makes it lighter than diamond. Chemical activity: it is slightly more reactive than diamond. This is because the reactants are able to penetrate between the hexagonal layers of carbon atoms in graphite.

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What is risk diamond explain?

The system uses a color-coded diamond with four quadrants in which numbers are used in the upper three quadrants to signal the degree of health hazard (blue), flammability hazard (red), and reactivity hazard (yellow). The bottom quadrant is used to indicate special hazards.

Why does proper interpretation of the NFPA diamond important?

The blue NFPA hazard diamond is used to signify health. It will help you determine how hazardous the material is to people. There are five ratings that show you how dangerous the material can become. represent chemicals that are harmful to people when used incorrectly but are often not deadly.

Why is diamond metastable?

Compare the structure of diamond and graphite, both composed of just carbon. … Once diamond is formed, therefore, it cannot reconvert back to graphite because the barrier is too high. So diamond is said to be metastable, since it is kinetically stable, not thermodynamically stable.

Do diamonds deteriorate?

Diamonds do not last forever. Diamonds degrade to graphite, because graphite is a lower-energy configuration under typical conditions. Diamond (the stuff in wedding rings) and graphite (the stuff in pencils) are both crystalline forms of pure carbon.

Why is diamond less stable than graphite?

Diamond has a rigid and compact structure due to which it takes more energy and time to convert into graphite and therefore, it is kinetically more stable but thermodynamically less stable than graphite.