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प्रश्न
What is buckminsterfullerene?
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उत्तर
Buckminsterfullerene is an allotrope of carbon. It is a spherical shaped molecule containing 60 carbon atoms, arranged in interlocking 20 hexagonal and 12 pentagonal rings of carbon atoms.
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संबंधित प्रश्न
What type of chemical bonds are formed by carbon? Why?
How buckminsterfullerene is it related to diamond and graphite?
Give the formula of the compound that would be formed by the combination of the following pair of elements:
K and H
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of oxygen, O2, is formed from two oxygen atoms. What name is given to this type of bonding? (At. No. of oxygen = 8)
Write two points of difference in the structures of diamond and graphite.
Explain why, diamond has a high melting point.
A hydrocarbon having one double bond has 100 carbon atoms in its molecule. The number of hydrogen atoms in its molecule will be
(a) 200
(b) 198
(c) 202
(d) 196
An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. In allotrope B, each atom of element E is surrounded by three other E atoms to form a sheet like structure. In allotrope C, each atom of element E is surrounded by four other E atoms to form a rigid structure.
(a) Name the element E.
(b) What is allotrope A.
(c) What is allotrope B?
(d) What is allotrope C?
(e) Which allotrope is used in making jewellery?
(f) Which allotrope is used in making anode of a dry cell?
For each compound mentioned above give the formulae of ions formed in aqueous solution.
Complete the following:
In case of non-polar covalent bond, the covalent bond is formed in the ______ of atoms and shared electrons are ______ distributed. (corner, middle, equally, unequally)
Explain the following briefly.
Pure water does not conduct electricity, but on adding sodium chloride to it, it starts conducting electricity.
What are the term defined below?
A bond formed by share pair of electrons, each bonding atom contributing one electron to the pair.
Draw the electron dot diagram and structure of methane.
Your body is made up of carbon.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
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Which of the following is the purest form of carbon?
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
The bond which is formed by the mutual sharing of electrons is called ______ bond.
