Advertisements
Advertisements
प्रश्न
Describe the structure of graphite with the help of a labelled diagram.
उत्तर
The structure of graphite consists of layers or sheets of carbon atoms which form flat hexagonal rings. In a graphite layer or sheet, each carbon atom is connected to three other carbon atoms by covalent bonds. Each layer of carbon atoms is at a distance with no covalent bonds existing between them. As the various layers of carbon atoms in a graphite crystal are held by weak Van der Waals forces, the layers can slide over each other smoothly.
The following diagram represents the structure of a graphite crystal:
APPEARS IN
संबंधित प्रश्न
Write the number of covalent bonds in the molecule of butane, C4H10.
What are covalent compounds?
Fill in the blank in the following sentence:
Two chlorine atoms combine to form a molecule. The bond between them is known as ..........
will CS2 conduct electricity or not?
give reason for your choice.
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)
One of the following is not an allotrope of carbon. This is:
(a) diamond
(b) graphite
(c) cumene
(d) buckministerfullerene
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
You can buy solid air-freshners in shops. Do you think these substance are ionic or covalent? Why?
State the type of bonding in the following molecule.
Hydroxyl ion
Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing electrons from their valence shells. Explain giving reason why carbon cannot attain such a configuration in this manner to form its compounds. Name the type of bonds formed in ionic compounds and in the compounds formed by carbon. Also explain the reason why carbon compounds are generally poor conductors of electricity.
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Ethene
Draw all possile structural formulae of compound from their molecular formula given below.
C3H4
Explain the following term with example.
Covalent bond
Explain why carbon tetrachloride does not dissolve in water.
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Potassium chloride is an electrovalent compound, while hydrogen chloride is a covalent compound, But, both conduct electricity in their aqueous solutions. Explain.
From the following hydrocarbon _______ is the cyclic hydrocarbon.
Your body is made up of carbon.
Discuss in brief about the properties of coordinate covalent compounds.
The correct structural formula of butanoic acid is
