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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
Why covalent compounds are different from ionic compounds?
Give one example of the following:
A molecule containing a single covalent bond.
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)
Draw the electron-dot structure of the following compound and state the type of bonding in the given case:
N2
Explain why, diamond has a high melting point.
Define a covalent bond.
Draw all possible structural formulae of the compound from its molecular formula given below.
C3H4
Explain the following term with example.
Covalent bond
Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the options A, B, C and D given below:
X is likely to have a ______.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\phantom{....}|\\\ce{H - C - C - C - H}\\ |\phantom{....}|\phantom{....}|\\\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H} \end{array}\] |
