Advertisements
Advertisements
प्रश्न
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.
उत्तर
The atomic number of carbon is 6. This means that it has 4 electrons in its outermost shell and it needs 4 more electrons to attain noble gas electronic configuration. It cannot form C4+ cation, as the removal of 4 valence electrons requires a huge amount of energy. Moreover, the cation formed will have 6 protons and 2 electrons which makes carbon highly unstable. Carbon cannot form C4− anion, as its nucleus with 6 protons cannot hold 10 electrons. Thus, carbon achieves noble gas electronic configuration by sharing its 4 electrons with other elements; it forms covalent compounds.
In ionic compounds, ionic bonds are formed, while in carbon compounds, covalent bonds are formed.
As carbon compounds are covalent in nature and lack free electrons so they are bad conductors of electricity.
APPEARS IN
संबंधित प्रश्न
State the reason why carbon can neither form \[\ce{C^4+}\] cations nor \[\ce{C^4−}\] anions but forms covalent compound.
Butanone is a four-carbon compound with the functional group:
Give one example of a molecule containing a double covalent bond
What is the atomic number of carbon. Write its electronic configuration.
what substance is graphite made?
The molecules having triple bond in them are:
(a) oxygen and ethyne
(b) carbon dioxide and ammonia
(c) methane and ethene
(d) nitrogen and ethyne
Write answer as directed.
Saturated hydrocarbons are classified into three types. Write these names giving one example each.
Give examples for the following:
Two solid covalent compounds.
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?
Explain the following:
Water is a polar covalent molecule.
Name gas with rotten egg smell.
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.
Generally, the melting and boiling point of carbon compounds are found to be less than _______ °C.
The bond between two oxygen atoms is _______ bond.
Write the molecular formula of the given compound.
Acetic acid
Your body is made up of carbon.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\phantom{....}|\\\ce{H - C - C - C - H}\\ |\phantom{....}|\phantom{....}|\\\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H} \end{array}\] |
Give an example for each of the following statement.
A compound in which three covalent bonds are formed.
Non-polar covalent compounds are ______ conductors of heat and electricity.
