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Why Are Most Carbon Compounds Poor Conductors of Electricity? - Science

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प्रश्न

 Why are most carbon compounds poor conductors of electricity?

उत्तर

Covalent compounds do not conduct electricity because they do not have free electrons. Current results from the motion of electrons or ions. Also, on dissolving covalent compounds in water they do not form ions. So, covalent compounds are generally poor conductor of electricity.

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2017-2018 (March) Delhi Set 1

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संबंधित प्रश्न

What are covalent compounds?


Explain why carbon forms compounds mainly by covalent bond.


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.


Buckminsterfullerene is spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
How many pentagons of carbon atoms are present in one molecule of buckminsterfullerene?


How does graphite act as a lubricant?


Fill in the following blank with suitable word:

The form of carbon which is known as black lead is ...........


What type of bond is present in oxygen molecule?


Friedrich Wohler converted an inorganic compound into an organic compound in the laboratory.

Write the name and formula of organic compound formed.


Explain why, diamond is hard while graphite is soft (though both are made of carbon atoms).

 

Out of KCl, HCl, CCl4 and NaCl, the compounds which are not ionic are:
(a) KCl and HCl
(b) HCl and CCl4
(c) CCl4 and NaCl
(d) KCl and CCl4


The electronic configurations of three elements X, Y and Z are as follows:

X 2, 4
Y 2, 7
Z 2, 1

(a) Which two elements will combine to form an ionic compound?
(b) Which two elements will react to form a covalent compound?
Give reasons for your choice.


Draw an electron dot structure of the following molecule. (Without showing the circle) :
Water


(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
In the liquid state, X will


Explain the following: 

Polar covalent compounds conduct electricity?


The number of electrons in the valence shell of a carbon atom is 4.


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)

\[\begin{array}{cc}
\phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
\phantom{..}|\phantom{....}|\phantom{....}|\\
\ce{H - C - C- C- H}\\
\phantom{.}|\phantom{....}|\phantom{....}|\\
\ce{H - C - H}\\
|\\\ce{H}\end{array}\]
 

`"CH"_3 - "CH"_2 - "OH" overset("Alkaline""KMnO"_4 + "Heat")(->) "CH"_3 - "COOH"`

In the above given reaction, alkaline KMnO4 acts as 


"Carbon prefers to share its valence electrons with other atoms of carbon or with atoms of other elements rather than gaining or losing the valence electrons in order to attain noble gas configuration." Give reasons to justify this statement.


In covalent compounds, the bond is formed due to ______ of electrons.


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