Advertisements
Advertisements
प्रश्न
Why does carbon form compounds mainly by covalent bonding?
उत्तर
Carbon has the property of tetravalency, so it mainly forms covalent bonds. Since carbon is an element with atomic number 6, its electronic configuration is (2,4). This means there are 4 valence electrons in its outermost shell, and it can either gain 4 electrons or lose 4 electrons to attain the inert gas configuration for becoming stable. As the atoms of carbon are of extremely small size, the nucleus exerts a great force of attraction on the outermost electrons to hold them tightly. This makes it difficult to remove or add electrons to its structure. Therefore, it attains the inert gas configuration by the sharing of electrons in the outermost shell. As the inert gas configuration is attained by the sharing of electrons, carbon forms compounds always by covalent bonding.
APPEARS IN
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.
Give reason why carbon compounds are generally poor conductors of electricity.
What type of bond is present in oxygen molecule?
What type of chemical bond is present in chlorine molecule? Explain your answer.
Describe the structure of graphite with the help of a labelled diagram.
The number of isomers formed by the hydrocarbon with molecular formula C5H12 is:
(a) 2
(b) 5
(c) 3
(d) 4
Give examples for the following:
Two gaseous polar compounds.
Name a neutral covalent molecule which contains one lone pair of electrons.
The particles present in strong electrolytes are
Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the options A, B, C and D given below:
The type of bonding in X will be ______.
Draw the electron dot diagram and structure of magnesium chloride.
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.
Answer the following question.
What is methane? Draw its electron dot structure. Name the type of bonds formed in this compound. Why are such compounds:
(i) poor conductors of electricity? and
(ii) have low melting and boiling points? What happens when this compound burns in oxygen?
Write the molecular formula of the given compound.
Acetic acid
Write scientific reason.
Carbon has the property of forming many compounds.
Write a short note.
Aromatic hydrocarbons
Discuss in brief about the properties of coordinate covalent compounds.
The correct structural formula of butanoic acid is
Write notes on the characteristics of covalent compounds.
