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प्रश्न
What is a covalent bond?
उत्तर
The chemical bond that is formed between two atoms by the sharing of electrons is known as a covalent bond.
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संबंधित प्रश्न
Explain why carbon forms compounds mainly by covalent bond.
Explain the nature of the covalent bond using the bond formation in CH3Cl.
What type of bonds are present in methane (CH4) and sodium chloride (NaCl)?
Fill in the blank in the following sentence:
Two atoms of the same element combine to form a molecule. The bond between them is known as ................ bond.
Fill in the blank in the following sentence:
The number of single covalent bonds in C2H2 molecule are ...........
Why is graphite used for making dry cell electrodes but diamond is not?
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
Explain why, diamond has a high melting point.
The following structural formula belongs to which carbon compound?
Taking hydrogen chloride and methane as examples, distinguish between a polar covalent bond and a non polar covalent bond.
What are the term defined below?
A bond formed by share pair of electrons, each bonding atom contributing one electron to the pair.
Potassium chloride is an electrovalent compound, while hydrogen chloride is a covalent compound, But, both conduct electricity in their aqueous solutions. Explain.
Write an Explanation.
Alkane
List two differences between the properties exhibited by covalent compounds and ionic compounds.
Identify the incorrect statement and correct them.
- Like covalent compounds, coordinate compounds also contain charged particles (ions). So they are good conductors of electricity.
- Ionic bond is a weak bond when compared to Hydrogen bond.
- Ionic or electrovalent bonds are formed by mutual sharing of electrons between atoms.
- Loss of electrons is called Oxidation and gain of electron is called Reduction.
- The electrons which are not involved in bonding are called valence electrons.
Which of the following is the purest form of carbon?
Acetic acid was added to a solid X kept in a test tube. A colourless, odourless gas Y was evolved. The gas was passed through lime water, which turned milky. It was concluded that ______.
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
______ is an example of a covalent compound having a high melting point.
Assertion (A): Melting point and boiling point of ethanol are lower than that of sodium chloride.
Reason (R): The forces of attraction between the molecules of ionic compounds are very strong.
