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The number of C - C linkages in C(60) (F...

The number of `C - C` linkages in `C_(60)` (Fullerene) is

A

60

B

90

C

180

D

240

Text Solution

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The correct Answer is:
B
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If x is the number of C-C sigma bonds in C_(60) (fullerene) and y is number of pentagonal rings in C_(60) then final out the value of (x+y) .

The ratio of number of pentagons in C_(60) and trigons (triangles) in white phosphorus,is______.

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

Following statements are given about fullerenes. Find the number of correct statements : (a) Fullerenes are made by the heating of graphite in an electric arc in the presence of inert gases such as helium or argon. (b) fullerenes are the purest form of cabon because they have smooth structure, having dangling bonds. (c) C_(8o) fullerenes have 12, five membered rings and 30-six membered rings. (d) Fullerenes have aromatic character. (e) In C_(60) fullerences six membered ring is fused with six of five but a five membered ring can only use fuse with six membered rings.

NARAYNA-14TH GROUP ELEMENTS-Single Answer type Questions
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  7. Which of the following process is/are associated with no change of hyb...

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  10. Which of the following statements is not correct ?

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  11. Which of the following statements regarding graphite is not correct ?

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  12. The following are some statements about graphite: I. C - C bond leng...

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  13. Incorrect statement about graphite is

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  14. "Graphite" underset("vapours of potassium")overset("heated with")rarr ...

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  16. Thermodynamically the most stable form of carbon is

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  17. Catenation i.e., linking of similar atom depends on size and electroni...

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  18. Cement, the important building material is a mixture of oxides of seve...

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