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प्रश्न
Name the element whose one of the allotropic forms is buckminsterfullerene.
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उत्तर
Carbon has buckminsterfullerene as one of its allotropes.
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संबंधित प्रश्न
Give reason why carbon compounds are generally poor conductors of electricity.
State the reason why carbon can neither form C4+ cations nor C4− anions but forms covalent compounds.
State the reason to explain why covalent compounds "are bad conductors of electricity".
State the reason to explain why covalent compounds "have low melting and boiling points."
Explain the nature of the covalent bond using the bond formation in CH3Cl.
What type of bonds are present in hydrogen chloride and oxygen?
Write the electron-dot structure for the following molecule.
Cl2
Explain why, ionic compounds conduct electricity in solution whereas covalent compounds do not conduct electricity.
Draw the electron-dot structure of N2 and state the type of bonding.
A saturated hydrocarbon has fifty hydrogen atom in its molecule. The number of carbon atoms in its molecule will be
(a) twenty five
(b) twenty four
(c) twenty six
(d) twenty seven
State the type of bonding in the following molecule.
Methane
Compare the compounds carbon tetrachloride and sodium chloride with regard to solubility in water and electrical conductivity.
Draw the electron dot diagram and structure of magnesium chloride.
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
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)
| \[\begin{array}{cc}\phantom{......}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\ \phantom{.....}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C = C}\\\phantom{.....}|\phantom{.........}|\\ \phantom{.....}\ce{H}\phantom{........}\ce{H}\end{array}\] |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
______ is an example of a covalent compound having a high melting point.
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?
In covalent compounds, the bond is formed due to ______ of electrons.
