Question
How is a covalent bond formed? Explain the rules of covalent bond formation with examples.
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Answer
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Attempt any five of the following:
i. What is hydrogenation?
ii. Why do the $C - C$ bonds rather than $C - H$ bonds break during cracking of alkanes?
iii. Which conformation of ethane is more stable?
iv. What happens when 2-bromobutane is being treated with KOH (alcoholic)?
v. Identify the structure of A and B;
vi. How will you separate propene from propyne?
vii. Why is t-butyl bromide more reactive towards $S _{ N } 1$ reaction as compared to n-butyl bromide?
→i. What is hydrogenation?
ii. Why do the $C - C$ bonds rather than $C - H$ bonds break during cracking of alkanes?
iii. Which conformation of ethane is more stable?
iv. What happens when 2-bromobutane is being treated with KOH (alcoholic)?
v. Identify the structure of A and B;
vi. How will you separate propene from propyne?
vii. Why is t-butyl bromide more reactive towards $S _{ N } 1$ reaction as compared to n-butyl bromide?
Match the species in Column I with the type of hybrid orbitals in Column II.
| Column I | | Column II | |
| i. | Hydrogen bond | a. | C |
| ii. | Resonance | b. | LiF |
| iii. | Ionic solid | c. | H2 |
| iv. | Covalent solid | d. | HF |
| e. | O3 |
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