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प्रश्न
What are the conditions necessary for the formation of covalent molecules?
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उत्तर १
Covalent bond is formed when the participating atoms contribute one electron each to form an electron pair which is then shared by the participating atoms in such a manner that each atom attains the nearest noble gas configuration.
Each atom should not be completely filled before covenant bond formation.
उत्तर २
- Both atoms should have high electron affinity.
- Both atoms should have high ionization energy.
- Both atoms should have four or more electrons in their valence shells.
- Both atoms should have high electronegativity.
Notes
Students can refer to the provided solutions based on their preferred marks.
संबंधित प्रश्न
Explain why carbon forms compounds mainly by covalent bond.
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".
Why is graphite used for making dry cell electrodes but diamond is not?
Draw all possile structural formulae of compound from their molecular formula given below.
C4H10
Explain the structure of Ammonium ion.
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)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
Discuss in brief about the properties of coordinate covalent compounds.
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?
