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प्रश्न
What are covalent compounds?
उत्तर १
Covalent compounds are the compounds that are formed by the mutual sharing of valence electrons by the constituent atoms. For example, a molecule of methane (CH4) is formed when the carbon atom shares one of its four valence electrons with one electron of each of the four H atoms.
उत्तर २
Covalent compounds are those where atoms share their electrons with other atoms to form more stable structure.
संबंधित प्रश्न
Write the number of covalent bonds in the molecule of butane, C4H10.
Name the type of bonds formed in ionic compounds and in the compounds formed by carbon.
State the reason why carbon can neither form \[\ce{C^4+}\] cations nor \[\ce{C^4−}\] anions but forms covalent compound.
State the reason to explain why covalent compounds "have low melting and boiling points."
What would be the electron-dot structure of carbon dioxide which has the formula CO2?
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
Which inert gas electron configuration do the Cl atoms in Cl2 molecule resemble? What is this electron configuration?
Fill in the blank in the following sentence:
The number of single covalent bonds in C2H2 molecule are ...........
What type of chemical bonds are formed by carbon? Why?
How buckminsterfullerene is it related to diamond and graphite?
will CCl4 conduct electricity or not?
give reason for your choice.
Which inert gas does the H atom in HCl resemble in electron arrangement?
Which inert gas does the Cl atom in HCl resemble in electron arrangement?
Write two points of difference in the structures of diamond and graphite.
A saturated hydrocarbon has fifty hydrogen atom in its molecule. The number of carbon atoms in its molecule will be
(a) twenty five
(b) twenty four
(c) twenty six
(d) twenty seven
The number of isomers formed by the hydrocarbon with molecular formula C5H12 is:
(a) 2
(b) 5
(c) 3
(d) 4
What do you understand by polar covalent compounds?
Explain the following term with example.
Hetero atom in a carbon compound
The carbon compound is used in daily life is ______.
What do you understand by lone pair and shared pair?
State the type of bonding in the following molecule.
Water
Electrons are getting added to an element Y:
Is Y getting oxidised or reduced?
State the type of bond formed when the combining atom has zero E.N. difference.
Explain the following:
Water is a polar covalent molecule.
In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?
Name greenish-yellow gas which also bleaches.
Fill in the blank and rewrite the completed statement:
Covalent compounds are generally soluble in _________ solvents.
Define the functional group and complete the following table.
| S.I. No. | Functional Group | Compound | Formula |
| (1) | ______________ | _______________ |
C2H5OH |
| (2) | _______________ | _______________ | CH3CHO |
Generally, the melting and boiling point of carbon compounds are found to be less than _______ °C.
Number of valence electrons in a carbon atom is _______.
Discuss in brief about the properties of coordinate covalent compounds.
When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.
The I.U.P.A.C name of CH3CH2CH = CH2 is?
An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following
The table shows the electronic structures of four elements.
| Element | Electronic Structure |
| P | 2, 6 |
| Q | 2, 8, 1 |
| R | 2, 8, 7 |
| S | 2, 8, 8 |
- Identify which element(s) will form covalent bonds with carbon.
- “Carbon reacts with an element in the above table to form several compounds.” Give suitable reason.
It is observed that covalent compounds are had conductors of electricity. Give reason.
Show the covalent bond formation in nitrogen molecule.
