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Question-1
Which is the most common oxidation state of Actinides?
(A)
+2
(B)
+3
(C)
+4
(D)
+6
Question-2
Which among the following is true?
(A)
Lanthanide ions are mostly coloured
(B)
5f shielding is greater
(C)
binding of 4f electrons is lower
(D)
Lanthanides are paramagnetic
Question-3
All elements of which series is radioactive?
(A)
Actinide
(B)
Lanthanide
(C)
Both a and b
(D)
None of these
Question-4
The electronic configuration of Actinides is
(A)
[Rn]5f
0-14
6d
0
7s
0
(B)
[Rn]5f
0-14
6d
0-2
7s
0
(C)
[Rn]5f
0-14
6d
0-2
7s
1
(D)
[Rn]5f
0-14
6d
0-2
7s
2
Question-5
Lanthanides series contains ____ elements?
(A)
Twelve
(B)
Fourteen
(C)
Fifteen
(D)
Sixteen
Question-6
Maximum oxidation state exhibited by Lanthanides is
(A)
+1
(B)
+2
(C)
+3
(D)
+4
Question-7
Which among the following is the complete lanthanides series?
(A)
La – Lu
(B)
Ce - Lu
(C)
La – Pr
(D)
None of these
Question-8
Alloys of Lanthanides are called as
(A)
Mish-metals
(B)
Metalloids
(C)
Plate metals
(D)
Actinides
Question-9
The elements in which the extra electron enters (n-2)f orbitals are called
(A)
s block elements
(B)
p block elements
(C)
d block elements
(D)
f block elements
Question-10
Which is not a consequence of lanthanide contraction?
(A)
Basicity of ions
(B)
increase in ionic radii
(C)
increase in atomic number
(D)
reduced tendancy to act as reducing agent
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Plus 2 Biology Science
Tamil Nadu (English Medium)
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