Advertisements
Advertisements
Question
What type of bonds are present in methane (CH4) and sodium chloride (NaCl)?
Solution
The chemical bond present in methane (CH4) is covalent bond as a carbon atom shares its four valence electrons with four hydrogen atoms to form one methane molecule.
The chemical bond present in sodium chloride (NaCl) is ionic bond as a sodium atom transfers one electron to a chlorine atom to form the ionic bond in NaCl.
APPEARS IN
RELATED QUESTIONS
Write structural formula of Methane.
What type of chemical bonds are formed by carbon? Why?
Give two general properties of ionic compounds and two those of covalent compounds.
will CS2 conduct electricity or not?
give reason for your choice.
What is graphite?
One of the following is not an allotrope of carbon. This is:
(a) diamond
(b) graphite
(c) cumene
(d) buckministerfullerene
Explain the Structural isomerism term with example.
Explain the following briefly.
Pure water does not conduct electricity, but on adding sodium chloride to it, it starts conducting electricity.
Fill in the blank with correct word from the bracket.
Melting and boiling points of covalent compounds are generally ______ (low, high).
An element L consists of molecules.
Why L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by 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 bond formed when the combining atom has zero E.N. difference.
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
The molecular masses of a carbon compound spread over a range of _______.
Write scientific reason.
Benzene compounds are called aromatic compounds.
Which of the following is the purest form of carbon?
Which of the following statements are correct for carbon compounds?
- Most carbon compounds are good conductors of electricity.
- Most carbon compounds are poor conductors of electricity.
- Force of attraction between molecules of carbon compounds is not very strong.
- Force of attraction between molecules of carbon compounds is very strong.
What is a covalent bond?
"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.
Assertion (A): Melting point and boiling point of ethanol are lower than that of sodium chloride.
Reason (R): The forces of attraction between the molecules of ionic compounds are very strong.
