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प्रश्न
Fill in the following blank with suitable word:
The form of carbon which is known as black lead is ...........
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उत्तर
The form of carbon which is known as black lead is graphite.
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संबंधित प्रश्न
List three characteristic properties of covalent compounds.
Give reason why carbon compounds are generally poor conductors of electricity.
What type of chemical bond is formed between carbon and bromine?
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
State one major difference between covalent and ionic bonds and give one example each of covalent and ionic compounds.
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
How buckminsterfullerene is it related to diamond and graphite?
A covalent molecule having a double bond between its atoms is:
(a) Hydrogen
(b) Oxygen
(c) water
(d) ammonia
What are the conditions necessary for the formation of covalent molecules?
Explain the following term with example.
Hetero atom in a carbon compound
Explain the following term with example.
Alkane
An element L consists of molecules.
What type of bonding is present in the particles that make up L?
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
Answer the following questions based on the table above:
What type of bond is formed between Y and Z.
State the type of bonding in the following molecule.
Water
What is the difference between :
Ionic compounds and covalent compounds
Give an example of the covalent bond formed by
(i) Similar atoms (ii) Dissimilar atoms
Generally, the melting and boiling point of carbon compounds are found to be less than _______ °C.
The molecular masses of a carbon compound spread over a range of _______.
The correct structural formula of butanoic acid is -
In covalent compounds, the bond is formed due to ______ of electrons.
