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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
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.
What type of bonds are present in hydrogen chloride and oxygen?
What type of bonding would you expect between Carbon and Chlorine?
Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
One of the following contains a double bond as well as single bonds. This is:
(a) CO2
(b) O2
(c) C2H4
(d) C2H2
The electronic configurations of two elements A and B are given below:
| A | 2, 6 |
| B | 2, 8, 1 |
(a) What type of chemical bond is formed between the two atoms of A?
(b) What type of chemical bond will be formed between the atoms of A and B?
Explain the following:
polar covalent compounds electricity.
Define a coordinate bond.
Explain the Structural isomerism term with example.
Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If B is a diatomic gas, write the equation for the direct combination of A and B to form a compound.
Taking MgCl2 as an electrovalent compound, CCl4 as a covalent compound, give four difference between electrovalent and covalent compounds
Write the molecular formula of the given compound.
Acetic acid
Your body is made up of carbon.
Write an Explanation.
Alkyne
Write a short note.
Aromatic hydrocarbons
Give an example for each of the following statement.
Formation of coordinate covalent bond between NH3 ➝ BF3 molecules
When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.
