What is the electronic configuration of transition elements?

1. \((n-1) d^{1-10} n s^{0-2} \) 2. \((n-1) d^{1-10} n s^2 \)
3. \(n f^2~ n p^{1-6} \) 4. \(n d^2~ n p^{1-6}\)

Subtopic:  d-Block Elements- Properties & Uses |
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The different oxidation states exhibited by the lanthanoids are:

1. +2, -3, +4 2. -2, -3, -4
3. +2, +3, -4 4. +2, +3, +4
Subtopic:  f-Block Elements- Properties & Uses |
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The "Disproportionation" reaction means that :

1. A relatively less stable oxidation state undergoes an oxidation−reduction reaction.
2. A relatively more stable oxidation state undergoes an oxidation−reduction reaction.
3. A relatively less stable oxidation state undergoes a hydrogenation reaction.
4. A relatively more stable oxidation state undergoes a hydrogenation reaction.
Subtopic:  d-Block Elements- Properties & Uses |
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In the 3d series, a metal with a +1 oxidation state is:

1. Mn 2. Cu
3. Fe 4. Zn
Subtopic:  d-Block Elements- Properties & Uses |
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The number of unpaired electrons in the gaseous ions Mn3+, Cr3+, V3+, and Ti3 are, respectively:

1. 3, 2, 3, and 1 2. 2, 2, 3, and 1
3. 4, 3, 2, and 1 4. 1, 2, 3, and 4
Subtopic:  d-Block Elements- Properties & Uses |
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Alloy that contains lanthanoid metals is-

1. Mischmetal

2. Permalloy

3. Supermalloy

4. Brass

Subtopic:  f-Block Elements- Properties & Uses |
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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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