- 1(current)
Q. No.| Assertion (A): | The energy of an electron is largely determined by its principal quantum number. |
| Reason (R): | The principal quantum number is a measure of the most possible distance of finding the electron around the nucleus. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
The correct statement(s) among the following regarding quantum numbers is:
| a. | The angular quantum number determines the three-dimensional shape of the orbital. |
| b. | The principal quantum number determines the orientation and energy of the orbital. |
| c. | The magnetic quantum number determines the size of the orbital. |
| d. | The spin quantum number of an electron determines the orientation of the spin of the electron relative to the chosen axis. |
Choose the correct option:
1. (a) and (d)
2. (b) and (c)
3. (c) and (d)
4. (b) and (d)
The graph that represents the probability density v/s distance of the electron from the nucleus for 2s orbital is:
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
|
Column I |
Column II |
||
| (A) |
n = 2, l =1 |
(i) |
4s |
| (B) |
n = 4, l = 0 |
(ii) |
2p |
| (C) |
n = 5, l = 3 |
(iii) |
3d |
| (D) |
n = 3, l = 2 |
(iv) |
5f |
Select the correct option:
1. (A) - (iv); (B) - (ii); (C) - (i); (D) - (iii)
2. (A) - (ii); (B) - (iii); (C) - (iv); (D) - (i)
3. (A) - (ii); (B) - (i); (C) - (iv); (D) - (iii)
4. (A) - (iii); (B) - (ii); (C) - (i); (D) - (iv)
Match the following.
|
Column I |
Column II |
||
| A. |
Photon |
1. |
Value is 4 for N-shell |
| B. |
Electron |
2. |
Probability density |
| C. | 3. |
Always positive value |
|
| D. |
Principle quantum number n |
4. |
Exhibits both momentum and wavelength |
Options:
| A | B | C | D | |
| 1. | 4 | 4 | 2,3 | 1,3 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 2,1 | 4 | 3 | 2,3 |
| 4. | 4 | 5 | 3 | 2 |
Match the quantum numbers with the information provided by them:
| Quantum number | Information provided | ||
| A. | Principal quantum number | 1. | Orientation of the orbital |
| B. | Azimuthal quantum number | 2. | Energy and size of orbital |
| C. | Magnetic quantum number | 3. | Spin of electron |
| D. | Spin quantum number | 4. | Shape of the orbital |
| A | B | C | D | |
| 1. | 2 | 4 | 1 | 3 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
- 1(current)
Q. No.
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