Advertisements
Advertisements
प्रश्न
Explain why carbon forms compounds mainly by covalent bond.
Advertisements
उत्तर
Carbon has 4 electrons in its outermost shell and requires 4 more electrons to attain a noble gas electronic configuration. It cannot form a C4+ ion, as the removal of 4 valence electrons requires a huge amount of energy. The C4+ ion thus formed will have 6 protons and 2 electrons, which will make it highly unstable. Carbon cannot form a C4− ion, as its nucleus with 6 protons cannot hold 10 electrons due to inter electronic repulsion. So, carbon achieves a noble gas electronic configuration only by sharing its 4 valence electrons with other elements. Thus, it forms compounds mainly by covalent bonds.
APPEARS IN
संबंधित प्रश्न
What type of bond exist in CCl4?
Why is diamond used for making cutting tools (like glass cutters) but graphite is not?
what substance is graphite made?
State the type of bonding in the following molecule.
Methane
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?
Compare the compounds carbon tetrachloride and sodium chloride with regard to solubility in water and electrical conductivity.
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.
The molecular masses of a carbon compound spread over a range of _______.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
Two carbon atoms can always form one or two covalent bonds.
