Generally transition elements and their salts are coloured due to the presence of unpaired electrons in metal ions. Which of the following compounds are coloured?
a. KMnO4
b. Ce(SO4)2
c. TiCl4
d. Cu2Cl2
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGeneral electronic configuration of actionoids is (n–2)f1–14 (n-1)d0–2ns2. Which of the following actinoids have one electron in 6d orbital?
a. U (Atomic no. 92)
b. Np (Atomic no.93)
c. Pu (Atomic no. 94)
d. Am (Atomic no. 95)
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAlthough +3 is the characteristic oxidation state for lanthanoids but cerium also shows +4 oxidation state because ___________.
a. It has variable ionisation enthalpy
b. It has a tendency to attain noble gas configuration
c. It has a tendency to attain f0 configuration
d. It resembles Pb4+
Choose the correct option
1. | (a, b) | 2. | (b, c) |
3. | (c, d) | 4. | (a, d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following actinoids show oxidation states upto +7?
(a) Am
(b) Pu
(c) U
(d) Np
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following oxidation state is common for all lanthanoids?
1. | +2 | 2. | +3 |
3. | +4 | 4. | +5 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThere are 14 elements in the actinoid series. Which of the following elements does not belong to this series?
1. | U | 2. | Np |
3. | Tm | 4. | Fm |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the property given in Column I with the element given in Column II.
Column I (Property) |
Column II (Element) |
||
A. |
Lanthanoid which shows + 4 oxidation state |
1. |
Pm |
B. |
Radioactive lanthanoid |
2. |
Ce |
C. |
Lanthanoid which has 4 electronic configurations in +3 oxidation state |
3. |
Lu |
D. |
Lanthanoid which has 4 electronic configurations in +3 oxidation state |
4. |
Gd |
Codes:
Options: | A | B | C | D |
1. | 2 | 4 | 1 | 3 |
2. | 1 | 2 | 3 | 4 |
3. | 2 | 1 | 4 | 3 |
4. | 4 | 1 | 3 | 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology