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प्रश्न
Buckminsterfullerene is spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
How many pentagons of carbon atoms are present in one molecule of buckminsterfullerene?
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उत्तर
In one molecule of buckminsterfullerene, 12 pentagons of carbon atoms are present.
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संबंधित प्रश्न
State the reason why carbon can neither form C4+ cations nor C4− anions but forms covalent compounds.
Choose the correct answer from the options given below:
Which of the following is a common characteristic of a covalent compound?
1) high melting point
2) consists of molecules
3) always soluble in water
4) Conducts electricity when it is in the molten state
Write any three features and give two examples of covalent compounds
Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?
Name a carbon containing molecule which has two double bonds.
Write the electron-dot structure for the following molecule.
Cl2
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
Give one example of a molecule containing a double covalent bond
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)
The number of carbon atoms joined in a spherical molecule of buckminsterfullerene is:
(a) fifty
(b) sixty
(c) seventy
(d) ninety
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methane
Molecular formula of Propane is C3H8 , write the structural formula of propane.
(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
The type of bonding in X will be
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
What is the difference between :
Ionic compounds and covalent compounds
Fill in the blank and rewrite the completed statement:
Covalent compounds are generally soluble in _________ solvents.
From the following hydrocarbon _______ is the cyclic hydrocarbon.
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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List two differences between the properties exhibited by covalent compounds and ionic compounds.
The number of single and double bonds present in a molecule of benzene (C6H6) respectively, are ______.
