- 1(current)
Q. No.Which of the following pairs has the same outermost electronic configuration?
| 1. | Cr+ and Mn2+ | 2. | Ni2+ and Cu+ |
| 3. | Fe2+ and Co+ | 4. | V2+ and Cr+ |
Subtopic: AUFBAU Principle |
81%
Level 1: 80%+
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Hints
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Which of the following orbitals has the highest energy?
1. \(n=6 \quad l=0 \)
2. \({n}=5 \quad {l}=2\)
3. \(n=4 \quad l=2 \)
4. \({n}=3 \quad {l}=1\)
1. \(n=6 \quad l=0 \)
2. \({n}=5 \quad {l}=2\)
3. \(n=4 \quad l=2 \)
4. \({n}=3 \quad {l}=1\)
Subtopic: AUFBAU Principle |
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Hints
Consider the following statements:
| Statement I | For hydrogen atom, 3p and 3d are degenerate. |
| Statement II | Degenerate orbitals have same energy |
| 1. | Both Statement I and II are correct. |
| 2. | Both Statement I and II are incorrect. |
| 3. | Statement I is correct, Statement II is incorrect. |
| 4. | Statement I is incorrect, Statement II is correct. |
Subtopic: AUFBAU Principle | Shell & Subshell |
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Hints
Given below are two statements.
| Assertion (A): | The energy of the 2s orbital in a hydrogen atom is higher than that of the 2s orbital in a lithium atom. |
| Reason (R): | Within the same subshell, orbital energies decrease as the atomic number increases. |
| 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. |
Subtopic: AUFBAU Principle | Shell & Subshell |
51%
Level 3: 35%-60%
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Hints
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For hydrogen atom, the orbital(s) with lowest energy is/are:
(A) \(4s\)
(B) \(3p_x \)
(C) \(3 d_{x^2-y^2}\)
(D) \(3 \mathrm{d}_{\mathrm{z}^2}\)
(E) \(4 p_z\)
Choose the correct answer from the options given below :
1. (A) and (E) only
2. (B) only
3. (A) only
4. (B), (C) and (D) only
(A) \(4s\)
(B) \(3p_x \)
(C) \(3 d_{x^2-y^2}\)
(D) \(3 \mathrm{d}_{\mathrm{z}^2}\)
(E) \(4 p_z\)
Choose the correct answer from the options given below :
1. (A) and (E) only
2. (B) only
3. (A) only
4. (B), (C) and (D) only
Subtopic: AUFBAU Principle | Shell & Subshell |
Level 3: 35%-60%
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Hints
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- 1(current)
Q. No.
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