what do you mean by allotropes ?write a note on allotropes of carbon? Sir/ma'am help me out please...
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The property of some elements to exist in more than two forms in same physical state is known as allotropes
Allotropes of carbon are buckmister fullerene , graphite,diamond and lampblack
1)Fullerene exist in C60 form.It is a football like structure with 5 membered rings and 6 membered rings.
2) Graphite is also called as plumbago,crystalline form of Graphite.It has hexagonal structure.Good conductor of electricity.
3) Diamond is hardest natural material.poor conductor of electricity. It has heat resistant property.
4) Lampblack is non crystalline structure. It is used to make kajal .
Allotropes of carbon are buckmister fullerene , graphite,diamond and lampblack
1)Fullerene exist in C60 form.It is a football like structure with 5 membered rings and 6 membered rings.
2) Graphite is also called as plumbago,crystalline form of Graphite.It has hexagonal structure.Good conductor of electricity.
3) Diamond is hardest natural material.poor conductor of electricity. It has heat resistant property.
4) Lampblack is non crystalline structure. It is used to make kajal .
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The various physical in which an element can occur is called allotrope of that element.
The three common allotropes of carbon are :-
1) Diamond
2) Graphite
3) Buckminsterfullerene
Diamond :-
i) It is a transparent, colorless substance that has an extraordinary brilliance .
ii) It is the hardest known substance (solid in state).
iii) It doesn't conduct electricity as it doesn't have free electrons.
iv) Each carbon atom is joined to four other carbon atoms forming a strong covalent bond with 3 dimensional structure.
v) Diamond is used as glass cutters for cutting marbles and for making jewellery.
Graphite :-
i) It is greyish-black and opaque substance.
ii) It is slippery to touch.
iii) It conducts electricity well as it has free electrons.
iv) Each carbon atom is joined with 3 other carbon atoms in a hexagonal array. One of the bonds is double bond thus carbon's stability is satisfied.
v) It is used to make electrodes in dry cells , the pencil lead , lubricants.
Buckminsterfullerene :-
i) It is a cluster of 60 carbon atoms joined together in a football like shape,
ii) There are 20 hexagons and 12 pentagons of carbon atoms in buckminsterfullerene.
iii) It is a dark solid at room temperature.
iv) It is neither soft nor hard.
v) It is a very small molecule.
Hope This Helps You!
The three common allotropes of carbon are :-
1) Diamond
2) Graphite
3) Buckminsterfullerene
Diamond :-
i) It is a transparent, colorless substance that has an extraordinary brilliance .
ii) It is the hardest known substance (solid in state).
iii) It doesn't conduct electricity as it doesn't have free electrons.
iv) Each carbon atom is joined to four other carbon atoms forming a strong covalent bond with 3 dimensional structure.
v) Diamond is used as glass cutters for cutting marbles and for making jewellery.
Graphite :-
i) It is greyish-black and opaque substance.
ii) It is slippery to touch.
iii) It conducts electricity well as it has free electrons.
iv) Each carbon atom is joined with 3 other carbon atoms in a hexagonal array. One of the bonds is double bond thus carbon's stability is satisfied.
v) It is used to make electrodes in dry cells , the pencil lead , lubricants.
Buckminsterfullerene :-
i) It is a cluster of 60 carbon atoms joined together in a football like shape,
ii) There are 20 hexagons and 12 pentagons of carbon atoms in buckminsterfullerene.
iii) It is a dark solid at room temperature.
iv) It is neither soft nor hard.
v) It is a very small molecule.
Hope This Helps You!
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