In Buckminster fullerene, the number of six membered rings and five membered rings respectively are

In buck minster fullerene (C_(60)) the number of six numbered and five membered rings "x" and "y" respectively,then "x-y" is

How many of the following statements are correct regarding allotropes of carbon: (a) Graphite is not a good conductor of electicity in perpendicular direction of layers at ordinary temperatures. (b) Coke is the impure form of carbon. ( c) Anthracite is the purest form of carbon. (d) Buckminister fullerence contains 12 five membered rings and 20 six-membered rings. (e) Diamond is a good conductor of heat. (f) Graphite is diamagnetic in nature. (g) Graphite is thermodynamically more stable than diamond

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

Sugar with five memebered ring called

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.

The number of five membered rings in [Pt("trien")]^(2+) (trien=triethyleneetetra amine) is