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प्रश्न
Describe the structure of diamond. Draw a simple diagram to show the arrangement of carbon atoms in diamond.
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उत्तर
A crystal of diamond is a molecule of carbon atoms in which each carbon atom is connected to four other carbon atoms by strong covalent bonds forming a regular tetrahedron. As the carbon atoms are held together firmly by covalent bonds, diamond forms a very rigid structure.
The arrangement of carbon atoms in a diamond crystal is shown below:
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संबंधित प्रश्न
Buckminsterfullerene is spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
How many hexagons of carbon atoms are present in one molecule of buckminsterfullerene?
Name a carbon containing molecule which has two double bonds.
Write the electron-dot structure for the following molecule.
Cl2
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)
The solution of one of the following compounds will not conduct electricity. This compounds is:
(a) NaCl
(b) CCl4
(c) MgCl2
(d) CaCl2
Out of KCl, HCl, CCl4 and NaCl, the compounds which are not ionic are:
(a) KCl and HCl
(b) HCl and CCl4
(c) CCl4 and NaCl
(d) KCl and CCl4
The electronic configurations of three elements X, Y and Z are as follows:
| X | 2, 4 |
| Y | 2, 7 |
| Z | 2, 1 |
(a) Which two elements will combine to form an ionic compound?
(b) Which two elements will react to form a covalent compound?
Give reasons for your choice.
Explain the following term with example.
Covalent bond
Explain the following term with example.
Alkane
Write answer as directed.
Saturated hydrocarbons are classified into three types. Write these names giving one example each.
Give examples for the following:
Two gaseous non polar compounds.
Explain the following:
Non-polar covalent compounds are insoluble in water.
Give reason as to why hydrogen chloride can be termed as a polar covalent compound.
State the type of bond formed, and draw Lewis structure of water.
Explain covalent bond with example.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\phantom{....}|\\\ce{H - C - C - C - H}\\ |\phantom{....}|\phantom{....}|\\\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H} \end{array}\] |
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
Which of the following is the formula of Butanoic acid?
A molecule of ammonia (NH3) has
