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प्रश्न
What type of chemical bonds are formed by carbon? Why?
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उत्तर
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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संबंधित प्रश्न
Name a carbon containing molecule which has two double bonds.
What would be the electron-dot structure of carbon dioxide which has the formula CO2?
Explain the formation of a chlorine molecule on the basis of electronic theory of valency.
will CCl4 conduct electricity or not?
give reason for your choice.
Name one covalent compound containing chlorine.
Which inert gas does the Cl atom in HCl resemble in electron arrangement?
The molecules having triple bond in them are:
(a) oxygen and ethyne
(b) carbon dioxide and ammonia
(c) methane and ethene
(d) nitrogen and ethyne
State the type of bonding in the following molecule.
Water
Give two example in following case:
Solid covalent compounds
Match the pairs.
| Group 'A' | Group 'B' |
| a. C2H6 | 1. Unsaturated hydrocarbon |
| b. C2H2 | 2. Molecular formula of an alcohol |
| c. CH4O | 3. Saturated hydrocarbon |
| d. C3H6 | 4. Triple bond |
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Water
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.
Fill in the blank from the choice given in bracket.
The compound that does not have a lone pair of electrons is ___________. (Water, Ammonia, carbon tetrachloride)
State the type of bond formed when the combining atom has small E.N. difference.
Potassium chloride is an electrovalent compound, while hydrogen chloride is a covalent compound, But, both conduct electricity in their aqueous solutions. Explain.
Define a covalent bond.
Define the functional group and complete the following table.
| S.I. No. | Functional Group | Compound | Formula |
| (1) | ______________ | _______________ |
C2H5OH |
| (2) | _______________ | _______________ | CH3CHO |
Write the molecular formula of the given compound.
Propylene
The table shows the electronic structures of four elements.
| Element | Electronic Structure |
| P | 2, 6 |
| Q | 2, 8, 1 |
| R | 2, 8, 7 |
| S | 2, 8, 8 |
- Identify which element(s) will form covalent bonds with carbon.
- “Carbon reacts with an element in the above table to form several compounds.” Give suitable reason.
"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.
