Q. No.The correct statement regarding the element silver(Ag) is:
1.
It is a hard metal.
2.
It is not a transition element.
3.
It has a partially filled d orbital in a +2 oxidation state. Thus, it is a transition element.
4.
None of the above
The enthalpy of atomization of transition metals is high due to :
1. High effective nuclear charge
2. A large number of valence electrons
3. Very strong metallic bonds
4. All of the above
The transition metals generally form coloured compounds due to :
| 1. | Absorption of radiation to promote an electron . |
| 2. | Presence of ligands, the d-orbitals split up into two sets of orbitals. |
| 3. | Energy required to promote an electron in d subshell is low. |
| 4. | All of the above. |
Transition metals and their many compounds act as good catalysts due to :
| 1. | Variable oxidation states | 2. | Unstable intermediate |
| 3. | Provide a suitable surface | 4. | All of the above |
Transition metals show paramagnetic behaviour due to:
1. Paired electrons in the (n-1) d-orbitals
2. Unpaired electrons in the (n-1) d-orbitals
3. Due to \(d^{10},\) and \(d^{0}\) configuration
4. None of the above
The correct statement(s) about interstitial compounds is/are:
| 1. | Transition elements are large in size and contain multiple interstitial sites. |
| 2. | Transition elements can trap atoms of other elements. |
| 3. | Interstitial compounds are chemically inert. |
| 4. | All of the above. |
Match the List I with List II:
| List I (Metal ion ) |
List II (Number of unpaired electrons) |
| i. Mn3+ | a. 2 |
| ii. Cr3+ | b. 4 |
| iii. V3+ | c. 1 |
| iv. Ti3+ | d. 3 |
Choose the most appropriate options:
| i | ii | iii | iv | |
| 1. | c | d | b | a |
| 2. | b | d | a | c |
| 3. | d | b | a | c |
| 4. | b | d | c | a |
The correct statement(s) about transition elements are:
| 1. | +2, and +3 oxidation states are more common for elements in the first transition series, while higher oxidation states are more common for the heavier elements |
| 2. | The heavier transition elements form low-spin complexes only |
| 3. | The atomic sizes of the elements of the first transition series are smaller than those of the heavier elements (elements of 2nd and 3r transition series) |
| 4. | All of the above |
The correct statement(s) regarding the oxidation state of transition elements is/are:
1. The oxidation state can vary from +1 to +7
2. Variable oxidation states are possible.
3. Both (1) and (2)
4. None of the above
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