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प्रश्न
What is buckminsterfullerene?
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
Give one example of a molecule containing a double covalent bond
Give the formula of the compound that would be formed by the combination of the following pair of elements:
Al and Cl2
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 nitrogen, N2, is formed from two nitrogen atoms. What name is given to this type of bonding? (Atomic number of nitrogen is 7)
Draw the electron-dot structure of H2O compound and state the type of bonding.
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
The number of covalent bonds in pentane (molecular formula C5H12) is:
The molecules having triple bond in them are:
(a) oxygen and ethyne
(b) carbon dioxide and ammonia
(c) methane and ethene
(d) nitrogen and ethyne
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)
The following structural formula belongs to which carbon compound?
Explain the following briefly.
Pure water does not conduct electricity, but on adding sodium chloride to it, it starts conducting electricity.
Give examples for the following:
Two gaseous polar compounds.
Which of the following is a common characteristic of a covalent compound?
What do you understand by dipole (polar) molecule?
What is the difference between a polar covalent compound and a non-polar covalent compound?
Potassium (Atomic No. 19) and chlorine (Atomic No. 17) react to form a compound. On the basis of electronic concept, explain
(i) oxidation
(ii) reduction
(iii)oxidising agent
(iv)reducing agent
Write an Explanation.
Alkyne
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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Although metals form basic oxides, which of the following metals form an amphoteric oxide?
Molecular reactions are ______ in the covalent compound.
