Question

1. Why carbon is tetravalent?

2. Carbon forms covalent compounds. Justify this statement

3. Write any three physical properties of covalent compounds.

4. State the reason why covalent compounds are generally

poor conductors of electricity.

5. Draw electron dot structure of -

a) water molecule (H2O) b) carbon dioxide (CO2)

c) methane (CH4)​

Answer 1

Answer:

• Tetravalent Carbon. Carbon is normally tetravalent, meaning it makes four bonds to other atoms. ... The lines represent two electron bonds, the dots represent electrons, and the balloons represent orbitals. Carbon has four valence electrons, that is, four electrons in the outermost shell.
• Covalent bonds are formed by sharing of electrons. They don't have a free electron that is required for electricity transfer (electricity is the flow of free electrons), thus they are bad conductors.
• Key Points
• General physical properties that can be explained by the covalent bonding model include boiling and melting points, electrical conductivity, bond strength, and bond length.
• Covalent compounds are formed on the basis of sharing electrons. When the electrons are shared within the bonds, there is no electrons available to conduct electricity - hence why covalent compounds are generally poor conductors of electricity. ... It is the only non metal compound that can conduct electricity.

Answer 2

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Explanation:

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