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प्रश्न
What do you understand by lone pair?
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उत्तर
A pair of electrons which is not shared with any other atom is known as a lone pair of electrons.
For example: In NH3, Nitrogen has a lone pair of electrons which is not shared with any hydrogen atom.
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संबंधित प्रश्न
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 number of covalent bonds in pentane (molecular formula C5H12) is ______.
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Ethene
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Water
Explain the following term with an example.
Unsaturated hydrocarbon
Molecular formula of Propane is C3H8 , write the structural formula of propane.
Which of the following is a common characteristic of a covalent compound?
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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Which of the following statements are correct for carbon compounds?
- Most carbon compounds are good conductors of electricity.
- Most carbon compounds are poor conductors of electricity.
- Force of attraction between molecules of carbon compounds is not very strong.
- Force of attraction between molecules of carbon compounds is very strong.
In covalent bond formation, the sharing of ______ electrons takes place in their outermost shell.
