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1
MHT CET 2026 15th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following elements has completely filled 4 f orbital at the expected ground state configuration?
A
$\text{La}$
B
$\text{Yb}$
C
$\text{Eu}$
D
$\text{Gd}$
2
MHT CET 2026 15th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following elements in +3 oxidation state forms colourless compounds?
A
$\text{Sc}$
B
$\text{Ni}$
C
$\text{Cr}$
D
$\text{V}$
3
MHT CET 2026 15th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Identify the factor responsible for the greater range of oxidation states in actinoids.
A
actinoid contraction
B
radioactive nature of actinoids
C
5f, 6d and 7s levels having comparable energies
D
4f and 5d levels being close in energies
4
MHT CET 2026 15th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following factors may be regarded as the main cause of lanthanide contraction?
A
Poor shielding of one of 4f electron by another in the sub-shell.
B
Effective shielding of one of 4f electrons by another in the subshell
C
Poorer shielding of 5d electrons by 4f electrons
D
Greater shielding of 5d electrons by 4f electrons
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