General Knowledge - General Science - Discussion

30. 

Carbon, diamond and graphite are together called

[A]. allotropes
[B]. isomers
[C]. isomorphs
[D]. isotopes

Answer: Option A

Explanation:

No answer description available for this question.

Tejal said: (Jun 15, 2011)  
Some elements are found in nature in more than one form. They have same chemical properties but diffrent physical properties. They are called allotropes.

Amit said: (Mar 21, 2012)  
Yes, due to the different arrangement of carbon atoms.

Amit Kanojia said: (Mar 22, 2012)  
Yes, in diamond structure one carbon atom bonded with other four different carbon atoms and form tetrahedron shape. Graphite has a layered, planar structure In each layer, the carbon atoms are arranged in a hexagonal lattice.

Srinu said: (Jul 11, 2012)  
Allotropes have same chemical properties butt different physical properties.

Hejaz Ahmed said: (Oct 25, 2012)  
Allotropes:.

Allotropy or allotropism is the property of some chemical elements to exist in two or more different forms, known as allotropes of these elements. Allotropes are different structural modifications of an element but having the same chemical composition for e. G Diamond, graphite have the same chemical composition but they have different structures. It is for this reason that diamond is the hardest known element whereas graphite is extremely soft.

Isomers:.

Are compounds with the same molecular formula but different structural formulas.

Isomorphs:.

An isomorph is an organism that does not change in shape during growth. The implication is that its volume is proportional to its cubed length, and its surface area to its squared length. This holds for any shape it might have; the actual shape determines the proportionality constants.

Isotopes:.

Isotopes are variants of a particular chemical element. While all isotopes of a given element share the same number of protons, each isotope differs from the others in its number of neutrons.

For example, carbon-12, carbon-13 and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13 and 14 respectively.

Benita said: (Apr 6, 2013)  
ALLOTROPY IS THE EXISTING OF ELEMENTS IN THE SAME PHYSICAL. CARBONS, DIAMONDS, GRAPHITES, COAL HAVE THE SAME PHYSICAL STATE. For example, diamonds and coal are allotropes of the element carbon.

Vineet said: (May 7, 2013)  
Carbon, graphite and diamond, collectively cannot be called allotropes because here carbon is the parent element and graphite and diamond are its allotropes, so we cannot place them altogether,

I would like to suggest a correction in question itself i.e. there should be "amorphous carbon" in place of carbon as it is an allotrope of carbon.

Rahul Soni said: (Nov 1, 2014)  
Friends,

Can anybody give the structure of diamond and graphite?

Kelly said: (Sep 13, 2015)  
What the answer to this?

An element always has the same set of properties.

Sharad said: (Feb 2, 2016)  
Answer is allotrope and Eight allotropes of carbon: a) diamond, b) graphite, c) lonsdaleite, d) C60 buckminsterfullerene, e) C540, Fullerite f) C70, g) amorphous carbon, and h) single-walled carbon nanotube.

Nagas said: (Mar 22, 2016)  
Carbon is parent element all over three wr as their physical properties are completely different but chemical composition same may they have allotropic one.

Sachin said: (Apr 29, 2016)  
Diamond and graphite are allotropes of carbon.

Liana Duhlian said: (Jun 27, 2016)  
Graphite is the soft substance or not?

Tom said: (Apr 16, 2017)  
Yes, graphite is a soft substance.

R.Krishna Kumar said: (Apr 20, 2017)  
Graphite is a soft substance.

Kirankumar said: (Feb 26, 2018)  
What is isotopes and isomers?

Aditya Chetia said: (Jul 11, 2018)  
Graphite is a soft substance.

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