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प्रश्न
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
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उत्तर
carbon
Buckminsterfullerene is an allotropic form of the element carbon, and contains 60 carbon atoms joined in a spherical structure.
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संबंधित प्रश्न
An element L consists of molecules.
What type of bonding is present in the particles that make up L?
Why are most carbon compounds poor conductors of electricity?
Name one covalent compound containing chlorine.
What type of bonding would you expect between Hydrogen and Chlorine?
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)
Describe the structure of diamond. Draw a simple diagram to show the arrangement of carbon atoms in diamond.
State the type of bonding in the following molecule.
Ammonium ion
Define a coordinate bond.
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)
Molecular formula of Propane is C3H8 , write the structural formula of propane.
Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.
Explain the bonding in methane molecule using electron dot structure.
Write an Explanation.
Alkene
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
Give an example for each of the following statement.
A compound in which three covalent bonds are formed.
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
The correct structural formula of butanoic acid is
Write notes on the characteristics of covalent compounds.
State the reasons, why carbon cannot
- Lose four electrons to form C4+ cation and
- Gain four electrons to form C4- anion.
How does carbon overcome this problem to form compounds?
