UrbanPro
true

Take Class 10 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Allotropic Forms Of Carbon

Debraj Paul
25/01/2017 0 0

Allotropy is the property by virtue of which an element exist in more than one form and each form has different physical properties but identical chemical properties. These different forms are called allotropes. The two common allotropic forms of carbon are diamond and graphite.

About Graphite:
Graphite is an allotrope of carbon, which is black or bluish grey with a metallic lustre and or greasy feel. It occurs in igneous and metamorphic rocks, such as marble.

Structure:
Each carbon is bonded to only three neighboring carbon atoms in the same plane forming layers of hexagonal networks separated by comparatively larger distance. The different layers are held together by weak forces, called vanderwaal’s forces. The layers can therefore, easily slide over one another. This makes graphite lubricating, soft and greasy to touch.

Properties of Graphite:
(A) It is soft and greasy in touch.
(B) Its specific gravity is 2.25 (generally).
(C) It is grayish black and opaque.
(D) It is a good conductor of heat and electricity.
(E) It occurs in hexagonal layers.
(F) It is stable and has high melting point.

Structure of Diamond:
Diamond crystals found in nature are generally octahedral (eight faced). In the structure of diamond, each carbon i linked to four other carbon atoms forming regular and tetrahedral arrangement and this network of carbon atoms extends in three dimensions and is very rigid. This strong bonding is the cause of its hardness and its high density. This regular, symmetrical arrangement makes the structure very difficult to break. To separate one carbon atom from the structure, we have to break four strong covalent bonds.

Properties of Diamond:
(A) It occurs naturally in free state and has octahedral shape.
(B) It is the hardest natural substance known.
(C) It has high specific gravity (about 3.5).
(D) It is transparent, colourless and brittle solid.
(E) It has a high refractive index (about 2.4).
(F) It is non-conductor of electricity.

0 Dislike
Follow 1

Please Enter a comment

Submit

Other Lessons for You

How to Study?
The following tips are just my advice; they are not absolute. Choose those that will best fit you. Plan a regular time to study Choose a quiet place where you will not be distracted. When...
A

Amrtha S.

0 0
0

learning is fun ,,,teaching is just showing a student how to enjoy it .
teaching-finding effective ways to make learning fun for the child
G

Subtraction of a number from Base 10
Suppose subtract 358 from 10000. Here Base 1000=10'3, 10 raised to power 3 How to calculate faster in mind, just subtract 3 from 9, 5 from 9 and last digit 8 from 10. Now we get 642. Isn't it so faster...

Statistics
Flash back from IX Class A systematic record of facts or different values of a quantity is called data. Features of the data Statistics deals with collection, presentation, analysis and interpretation...
A

Amrtha S.

0 0
0

To Improve Or Build Up Your Vocabulary.
One of the best ways to improve or build up vocabulary is to write or use one-word substitutes for the given phrase. It is very important to write precisely and speak in a single word. Like the word...

Looking for Class 10 Tuition ?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Class 10 Tuition Classes?

The best tutors for Class 10 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 10 Tuition with the Best Tutors

The best Tutors for Class 10 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more