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प्रश्न
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of
पर्याय
helium
neon
argon
krypton
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उत्तर
neon
Explanation -
Carbon shares its valence electrons with other atoms of carbon or with atoms of other elements. The shared electrons belong to the outermost shells of both the atoms and lead to both atoms attaining the noble gas configuration. After sharing four electrons with four univalent atoms, carbon attains the electronic configuration of the noble gas Neon (2,8).
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संबंधित प्रश्न
Choose the correct answer from the options given below:
Which of the following is a common characteristic of a covalent compound?
1) high melting point
2) consists of molecules
3) always soluble in water
4) Conducts electricity when it is in the molten state
Fill in the following blank with suitable word:
The general formula CnH2n for cycloalkanes is the same as that of ...........
Name one covalent compound containing chlorine.
One of the following compounds is not ionic in nature. This compound is:
(a) Lithium chloride
(b) Ammonium chloride
(c) Calcium chloride
(d) Carbon tetrachloride
You can buy solid air-freshners in shops. Do you think these substance are ionic or covalent? Why?
What are the conditions necessary for the formation of covalent molecules?
What is the difference between ionic compounds and polar covalent compounds?
Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing electrons from their valence shells. Explain giving reason why carbon cannot attain such a configuration in this manner to form its compounds. Name the type of bonds formed in ionic compounds and in the compounds formed by carbon. Also explain the reason why carbon compounds are generally poor conductors of electricity.
Explain the following term with example.
Hetero atom in a carbon compound
The electronic configuration of N2 is 2, 5. How many electrons in the outer shell of a N atom are not involved in the formation of a nitrogen molecule?
Draw the electron dot diagram and structure of nitrogen molecule.
Fill in the blank and rewrite the completed statement:
Covalent compounds are generally soluble in _________ solvents.
Answer the following question.
What is methane? Draw its electron dot structure. Name the type of bonds formed in this compound. Why are such compounds:
(i) poor conductors of electricity? and
(ii) have low melting and boiling points? What happens when this compound burns in oxygen?
Number of valence electrons in a carbon atom is _______.
The bond between two oxygen atoms is _______ bond.
Write a short note.
Aromatic hydrocarbons
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
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When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.
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
