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प्रश्न
Give one example of a molecule containing a double covalent bond
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उत्तर
A molecule containing a double covalent bond: oxygen molecule 
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संबंधित प्रश्न
Elements forming ionic compounds attain noble gas configuration by either gaining or losing electrons from their outermost shells. Give reason to explain why carbon cannot attain noble gas configuration in this manner to form its compounds.
State the reason why carbon can neither form C4+ cations nor C4− anions but forms covalent compound.
Why are most carbon compounds poor conductors of electricity?
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?
Explain why, diamond has a high melting point.
You can buy solid air-freshners in shops. Do you think these substance are ionic or covalent? Why?
Define a coordinate bond.
Complete the following:
In case of non-polar covalent bond, the covalent bond is formed in the ______ of atoms and shared electrons are ______ distributed. (corner, middle, equally, unequally)
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methane
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Ethene
Give examples for the following:
Two liquid non polar compounds.
Electrons are getting added to an element Y:
which electrode will Y migrate to during the process of electrolysis?
Potassium (Atomic No. 19) and chlorine (Atomic No. 17) react to form a compound. On the basis of electronic concept, explain
(i) oxidation
(ii) reduction
(iii)oxidising agent
(iv)reducing agent
Potassium chloride is an electrovalent compound, while hydrogen chloride is a covalent compound, But, both conduct electricity in their aqueous solutions. Explain.
Give an example of the covalent bond formed by
(i) Similar atoms (ii) Dissimilar atoms
Name the anion present in the following compound:
When a barium chloride solution is added to a solution of compound B, a white precipitate insoluble in dilute hydrochloric acid is formed.
The number of electrons in the valence shell of a carbon atom is 4.
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)
| \[\begin{array}{cc} \phantom{.........}\ce{H}\\ \phantom{.........}|\\ \ce{H - C ≡ C - C - H}\\ \phantom{.........}|\\ \phantom{.........}\ce{H} \end{array}\] |
Statement (A): Covalent compounds are bad conductors of electricity.
Reason (B): Covalent compounds contain charged particles (ions)
