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C(60) is aromatic allotrope of carbon co...

`C_(60)` is aromatic allotrope of carbon containing

A

hexagons and octagons

B

pentagons and triangles

C

hexagons and pentagons

D

squares and quadrilaterals

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The correct Answer is:
C
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Allotropes Of Carbon

Name two allotropes of carbon

C_(60) , an allotrope of carbon contains :

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Assertion (A) : C_(60) fullerence is an allotrope if carbon. Reason (R) :In C_(60) fullerene , five -menmebrd rings are isolated forem each other .

Fullerenes constitute a family of crystalline allotropes of carbon consisting of spherical or ellipsoidal molecules of composition C_(2n) when n is gt = ____.

_____ is a crystalline allotrope of carbon with 60 carbon atoms having a spherical shape.

Which of the following statements is INCORRECT? In fullerene (C60) total number of bonds( sigma and pi) is 90 Fullerene is purest form among allotropes of carbon Diamond is purest form among allotropes of carbon In fullerene (C60) "20" six membered rings and "12" five membered rings are present

TARGET PUBLICATION-SOLID STATE-QUESTION
  1. In which form are the carbon atoms in graphite arranged?

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  2. The hybridisation of carbon in diamond, graphite and acetylene are res...

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  3. C(60) is aromatic allotrope of carbon containing

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  4. Crystals can be classified into ….basic crystal habits

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  5. How many types of Bravais lattices can occur in crystalline solids?

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  6. What are the correct axial distance and axial angles for rhombohedral ...

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  7. In a simple or primitive unit cell, what is the number of atoms per un...

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  8. What is the two-dimensional coordination number of a molecule in squar...

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  9. In planar square close packing , each sphere is surrounded by .

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  10. In a close packed array of N spheres, the number of tetrahedral holes ...

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  11. the number of tetrahedral voids per unit cell in NaCl crystal is ...

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  12. Position of octahedral voids in fcc structure is//are

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  13. The coordination number in hcp is

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  14. The packing efficiency of a two-dimensional square unit cell shown bel...

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  15. The space occupied by b.c.c. arrangement is approximately

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  16. The maximum percentage of available volume that can be filled in a fac...

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  17. A solid is made of two element X and Y .The atoms Z are in C CP arrang...

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  18. A solide A^(+)B^(-) has the B^(-) ions arranged as below. If the A^(+)...

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  19. IF the radius ratio of cation to anion is in the range of 0.2...

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  20. For tetrahedral co-ordination the radius ratio (r^(+) //r^(-))should b...

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