Transition Elements (General Introduction, Electronic Configuration,...) NEET Questions

Inorganic Chemistry - D- and F-Block Elements

Transition Elements (General Introduction, Electronic Configuration,...) MCQ Questions


13.
Which of the following pairs has nearly the same atomic radii?
A.
Cr and Mo
B.
Ti and Zr
C.
V and Nb
D.
Zr and Hf
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ANSWER :
D. Zr and Hf
14.
Across the 3d series, the ionisation enthalpy:
A.
Decreases with irregularities
B.
Increases with some irregularities
C.
Remains constant
D.
Decreases regularly
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ANSWER :
B. Increases with some irregularities
15.
The third ionisation enthalpy of which of the following is the highest in 3d series?
A.
Ni
B.
Mn
C.
Cu
D.
Zn
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ANSWER :
D. Zn
16.
The second ionisation enthalpy of Cr is unusually high because:
A.
Cr⁺ has stable d¹⁰ configuration
B.
Cr⁺ has stable d⁵ configuration
C.
Cr⁺ has unstable d⁵ configuration
D.
Cr⁺ has p⁶ configuration
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ANSWER :
B. Cr⁺ has stable d⁵ configuration
17.
Which ion has the lowest third ionisation enthalpy in the 3d series?
A.
Mn²⁺
B.
Fe²⁺
C.
Sc²⁺
D.
Zn²⁺
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ANSWER :
C. Sc²⁺
18.
Which transition metal of 3d series exhibits the maximum number of oxidation states?
A.
Fe
B.
V
C.
Cr
D.
Mn
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ANSWER :
D. Mn