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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
Why covalent compounds are different from ionic compounds?
Name the following:
The property of element by virtue of which atoms of the element can link to each other in the form of a long chain or ring structure.
Give one example of a molecule containing a triple covalent bond.
Fill in the blank in the following sentence:
In forming N2 molecule, .............. electrons are shared by each atom of nitrogen.
What is a covalent bond?
What type of chemical bonds are formed by carbon? Why?
Draw the electron-dot structure of a hydrogen chloride molecule.
What is the difference between ionic compounds and polar covalent compounds?
Explain the following term with example.
Covalent bond
Observe the straight chain hydrocarbons given below and answer the following
questions :
i) Which of the straight chain compounds from A and B is saturated and unsaturated straight chains?
ii) Name these straight chains.
iii) Write their chemical formulae and number of – CH2 - units.
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?
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.
Draw the electron dot diagram and structure of nitrogen molecule.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
List two differences between the properties exhibited by covalent compounds and ionic compounds.
The correct structural formula of butanoic acid is
The bond which is formed by the mutual sharing of electrons is called ______ bond.
Statement (A): Covalent compounds are bad conductors of electricity.
Reason (B): Covalent compounds contain charged particles (ions)
Non-polar covalent compounds are ______ conductors of heat and electricity.
