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Q. No.| Statement 1: | Silver atom has completely filled d orbitals (4d10) in its ground state. |
| Statement 2: | Silver is not a transition element. |
1. Statement 1 is true , statement 2 is false.
2. Statement 1 is false, statement 1 is true.
3. Both statements are true.
4. Both statements are false.
Subtopic: d-Block Elements- Properties & Uses |
65%
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The enthalpy of atomization of zinc is the lowest among the 3d series, because-
1. It has weak coordinate bond
2. It has strong metallic bonding
3. It has strong ionic bonding
4. It has weak metallic bonding
1. It has weak coordinate bond
2. It has strong metallic bonding
3. It has strong ionic bonding
4. It has weak metallic bonding
Subtopic: d-Block Elements- Properties & Uses |
72%
From NCERT
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The transition metal that exhibits the largest number of oxidation states among the following is-
1. Cr
2. Mn
3. Zn
4. Sc
1. Cr
2. Mn
3. Zn
4. Sc
Subtopic: d-Block Elements- Properties & Uses |
95%
From NCERT
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The E0(M2+/M) value for copper is positive (+0.34V) due to -
1. High energy of atomization and low hydration energy
2. Low energy of atomization and low hydration energy
3. High energy of atomization and high hydration energy
4. low energy of atomization and high hydration energy
1. High energy of atomization and low hydration energy
2. Low energy of atomization and low hydration energy
3. High energy of atomization and high hydration energy
4. low energy of atomization and high hydration energy
Subtopic: d-Block Elements- Properties & Uses |
61%
From NCERT
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The irregular variation of ionization enthalpies (first and second) in the first series of the transition elements is due to-
1. The extra stability of configurations such as d5, d10
2. The less stability of configurations such as d5, d10
3. The extra stability of configurations such as d4, d6
4. The extra stability of configurations such as d7, d8
1. The extra stability of configurations such as d5, d10
2. The less stability of configurations such as d5, d10
3. The extra stability of configurations such as d4, d6
4. The extra stability of configurations such as d7, d8
Subtopic: d-Block Elements- Properties & Uses |
91%
From NCERT
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| Statement 1: | Highest oxidation state of a metal is exhibited in its oxide or fluoride only. |
| Statement 2: | Both oxide and fluoride ions are able to oxidise metals. |
1. Statement 1 is true, statement 2 is false.
2. Statement 1 is false, statement 2 is true.
3. Both statements are true.
4. Both statements are false.
Subtopic: d-Block Elements- Properties & Uses |
74%
From NCERT
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| Statement I: | Cr2+ is a stronger reducing agent than Fe2+ . |
| Statement II: | Fe2+ is a stronger reducing agent than Cr2+ . |
1. Both statements I and II are true.
2. Statement I is true and statement II is false.
3. Both statements I and II are false.
4. Statement I is false, statement II is true.
Subtopic: d-Block Elements- Properties & Uses |
63%
From NCERT
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The ‘spin only’ magnetic moment of M2+(aq) ion is :
(Z for 'M' = 27)
1. 3.87 BM
2. 5.10 BM
3. 1.73 BM
4. 2.45 BM
(Z for 'M' = 27)
1. 3.87 BM
2. 5.10 BM
3. 1.73 BM
4. 2.45 BM
Subtopic: d-Block Elements- Properties & Uses |
78%
From NCERT
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Cu+ ion is not stable in aqueous solutions, because:
| 1. | Hydration energy of Cu+2 is more than the ionisation energy for Cu+ |
| 2. | Ionisation energy of Cu+ is more the hydration energy of Cu+2 |
| 3. | Hydration energy of Cu+2 is equal to the ionisation energy of Cu+ |
| 4. | Both (2) and (3) |
Subtopic: d-Block Elements- Properties & Uses |
69%
From NCERT
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| Statement 1: | Actinoid contraction is greater from element to element than lanthanoid contraction. |
| Statement 2: | 5f orbitals have a poorer shielding effect than 4f orbitals. |
1. Statement 1 is true, statement 2 is false.
2. Statement 1 is false, statement 2 is true.
3. Both statements are false.
4. Both statements are true.
Subtopic: Lanthanoid & Actinoids Contraction |
77%
From NCERT
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