Actinoids (Electronic Configuration and Oxidation States) NEET Questions

Inorganic Chemistry - D- and F-Block Elements

Actinoids (Electronic Configuration and Oxidation States) MCQ Questions


13.
Which is the first element in the actinoid series?
A.
Ac
B.
Th
C.
Pa
D.
U
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ANSWER :
B. Th
14.
Which actinoid shows +3, +4, +5, and +6 oxidation states?
A.
Pa
B.
U
C.
Th
D.
Np
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ANSWER :
B. U
15.
Actinoids are mostly:
A.
Paramagnetic
B.
Diamagnetic
C.
Non-reactive
D.
Non-radioactive
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ANSWER :
A. Paramagnetic
16.
Which of the following elements is radioactive and an actinoid?
A.
La
B.
Yb
C.
Th
D.
Lu
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ANSWER :
C. Th
17.
Which of the following shows +3 and +5 oxidation states?
A.
Th
B.
Pa
C.
U
D.
Cm
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ANSWER :
B. Pa
18.
The shielding effect of 5f electrons is:
A.
Very good
B.
Better than 4f
C.
Poor
D.
Strong
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ANSWER :
C. Poor