Give below are some atomic numbers:

29, 59, 74, 95, 102, 104
The atomic numbers of the inner transition elements among the above are :

1. 29, 59, 74

2. 59, 95, 102

3. 95, 102, 104

4. 59, 74, 95

Subtopic:  f-Block Elements- Properties & Uses |
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The electronic configuration of the last element of actinoids is :

1. Thorium, Th: Rn5f146d17s2

2. Lawrencium, Lr: Rn5f146d17s2

3. Neptunium, Np: Rn5f146d17s2

4. Protactinium, Pa: Rn5f146d17s2

Subtopic:  f-Block Elements- Properties & Uses |
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The number of 3d electrons in the Cr3+ ions will be:

1. 5 2. 6
3. 3 4. 7
Subtopic:  d-Block Elements- Properties & Uses |
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The correct statement regarding 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

Subtopic:  d-Block Elements- Properties & Uses |
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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

Subtopic:  d-Block Elements- Properties & Uses |
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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.

Subtopic:  d-Block Elements- Properties & Uses |
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Match the following : 

Elements Electronic configuration
i. 61 a. [Rn]5f136d0 7s 2
ii. 91 b. [Xe]4f56s2
iii. 101 c. [Rn]5f146d77s2
iv. 109 d. [Rn] 5f2 6d17s2
 
i ii iii iv
1. b d a c
2. c a d b
3. c d a b
4. a c b d

Subtopic:  d-Block Elements- Properties & Uses |
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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
Subtopic:  d-Block Elements- Properties & Uses |
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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

Subtopic:  d-Block Elements- Properties & Uses |
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Consider the following statements: 

a. Lanthanoid and actinoid belong to the f block and their general electronic configuration is  nf1-14 n-1d0-1ns2 .
b. All lanthanides and actinoids show an oxidation state of +3.
c. The magnetic properties of the actinoids are more complex than those of the lanthanoids. 
d. Lanthanoids are comparatively less electropositive than actinides

Correct statements amongst the above are:

1. a, b 2. c, d, a
3. d, a, b 4. b, c, d
Subtopic:  f-Block Elements- Properties & Uses |
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