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Question
What type of chemical bonds are formed by carbon? Why?
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Solution
Carbon always forms covalent bonds. This is because it is tetravalent and attain the inert gas configuration of 8 electrons in its outermost shell by sharing electrons.
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RELATED QUESTIONS
Choose the correct answer from the options given below:
Which of the following is a common characteristic of a covalent compound?
1) high melting point
2) consists of molecules
3) always soluble in water
4) Conducts electricity when it is in the molten state
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
What type of bonds are present in CO2 molecule? Draw their electron-dot structures.
Explain why covalent compounds have generally high melting points?
Give two general properties of ionic compounds and two those of covalent compounds.
One of the following compounds is not ionic in nature. This compound is:
(a) Lithium chloride
(b) Ammonium chloride
(c) Calcium chloride
(d) Carbon tetrachloride
A solid element X has four electrons in the outermost shell of its atom. An allotrope Y of this element is used as a dry lubricant in machinery and also in making pencil leads.
(a) What is element X?
(b) Name the allotrope Y.
(c) State whether allotrope Y is a good conductor or non-conductor of electricity.
(d) Name one use of allotrope Y (other than lubrication and pencil leads)
(e) Name two other allotropes of element X.
What do you understand by polar covalent compounds?
Distinguish between ionic and covalent compounds under the following properties:
(i) Strength of forces between constituent elements
(ii) Solubility of compounds in water
(iii) Electrical conduction in substances
Taking hydrogen chloride and methane as examples, distinguish between a polar covalent bond and a non polar covalent bond.
Give examples for the following:
Two gaseous non polar compounds.
Electrons are getting added to an element Y:
Is Y getting oxidised or reduced?
Draw the electron dot diagram and structure of magnesium chloride.
What is the difference between a polar covalent compound and a non-polar covalent compound?
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{.........}\ce{H}\\ \phantom{.........}|\\ \ce{H - C ≡ C - C - H}\\ \phantom{.........}|\\ \phantom{.........}\ce{H} \end{array}\] |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Give an example for each of the following statement.
A compound in which three covalent bonds are formed.
Two carbon atoms can always form one or two covalent bonds.
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
Molecular reactions are ______ in the covalent compound.
