Chemical Bonding - Result Question 73
49. Match the orbital overlap figures shown in Column I with the description given in Column II and select the correct answer using the codes given below the Columns.
(2014 Adv.)
Codes
| A | B | C | D | A | B | C | D | ||
|---|---|---|---|---|---|---|---|---|---|
| (a) | 4 | 3 | 2 | 1 | (b) | 1 | 2 | 3 | 4 |
| (c) | 2 | 3 | 1 | 4 | (d) | 4 | 1 | 2 | 3 |
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Answer:
Correct Answer: 49. (c) $A \rightarrow 2 ; B \rightarrow 3 ; C \rightarrow 1 ; D \rightarrow 4$
Solution:
- PLAN This problem includes basic concept of bonding. It can be solved by using the concept of molecular orbital theory.
Any orbital has two phase $+ve$ and $-ve$. In the following diagram, + ve phase is shown by darkening the lobes and $-ve$ by without darkening the lobes.
When two same phase overlap with each other, it forms bonding molecular orbital otherwise antibonding.
On the basis of above two concepts, correct matching can be done as shown below:
$\therefore \mathrm{A} \rightarrow 2, \mathrm{~B} \rightarrow 3, \mathrm{C} \rightarrow 1, \mathrm{D} \rightarrow 4$
Hence, (c) is the correct option.
BETA
