10 F-Block Elements MCQ Questions are given on this page. These questions have been asked in previous year exams of CSIR NET, GATE, TIFR, BARC etc. Test your knowledge by trying these simple MCQs and match your answers with the answer key provided at the bottom of the page.
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Quiz PDF
Q1
Which of
the following statement is true for lanthanides?
[NET Dec 2015]
A. The observed magnetic moment of Eu3+
at room temperature is higher than that of calculated from spin-spin coupling.
B. Lanthanide oxides are predominantly
acidic in nature.
C. The stability of Sm(II) is due to
its' half-filed sub-shell.
D. Lanthanide (III) ions can be
separated by ion exchange chromatography
Correct
answer is
(a) A and D
(b) A and B
(c) A and C
(d) B and C
Q2
For mono
ionic complex [UO2(NO3)3]-, the
correct coordination number and geometry respectively, are
[NET June 2016]
(a) 8 and hexagonal bipyramidal
(b) 5 and square pyramidal
(c) 8 and square antiprism
(d) 5 and trigonal bipyramidal
Q3
The 'g'
values for Ce3+ (4f1) and Pr3+ (4f2)
respectively are
[NET June 2016]
(a) 3/7 and 2/5
(b) 5/7 and 4/5
(c) 6/7 and 3/5
(d) 6/7 and 4/5
Q4
For [Ce(NO3)4(OPPh3)2],
from the following
[NET Dec 2016]
(A)
Its'
aqueous solution is yellow-orange in color
(B)
Coordination
number of Ce is ten
(C)
It shows
metal to ligand charge transfer
(D)
It is
diamagnetic in nature
The
correct answer is,
(a) A and B
(b) A and C
(c) A, B and D
(d) B, C and D
Q5
The metal
iodide with metallic lustre and high electrical conductivity is
[NET Dec 2016]
(a) NaI
(b) CdI2
(c) LaI2
(d) BiI3
Q6
The
calculated and observed magnetic moments of aqua complexes of a lanthanide ion
are 0 and 3.5 respectively. The lanthanide ion is
[NET June 2017]
(a) Pm3+
(b) Pr3+
(c) Eu3+
(d) Sm3+
Q7
Match
lanthanides in column I with their properties in column II
[NET Dec 2017]
Column I Column II
(A) Lu (i)
Reagent in M(IV)
(B) Eu (ii)
MI2 of metallic lustre
(C) Ce (iii)
Diamagnetic M(III)
(D) Tb (iv)
Pink in M(III)
(a)
A-(iii),
B-(ii), C-(i), D-(iv)
(b)
A-(ii),
B-(iii), C-(iv), D-(i)
(c)
A-(iv),
B-(ii), C-(i), D-(iii)
(d)
A-(iii),
B-(ii), C-(iv), D-(i)
Q8
Consider
the following statements for actinides (An)
[NET Dec 2017]
(A)
Oxidation
states greater than +3 are more frequent in An compared to Ln.
(B)
Some
An(III) ions show d-d transitions.
(C)
UO22+
and PuO22+ are stable.
(D)
Some of the
actinides do not have radioactive isotopes.
The
correct statements are
(a) A and C
(b) B and D
(c) A, B and C
(d) B, C and D
Q9
Trivalent
lanthanide ion having isotopic magnetic susceptibility is
[NET June 2018]
(a) Eu3+
(b) Gd3+
(c) Yb3+
(d) Lu3+
Q10
The correct
set of magic numbers is
[NET June 2019]
(a) 20, 28, 50 and 126
(b) 24, 28, 82 and 126
(c) 20, 50, 80 and 184
(d) 28, 50, 82 and 180
Ans Key
1.a 2.a 3.d 4.c 5.c 6.c 7.a 8.a 9.b 10.a
Detailed Solutions
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