
d and f block
Quiz
•
Chemistry
•
12th Grade
•
Medium
mary aby
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metal ion are paramagnetic in nature because:
(a) They form coloured salts
(b) They have one or more unpaired d- electrons
(c) They have one or more s- paired electron
(d) They are reducing agents
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the first transition series the highest oxidation state is exhibited by:
(a) Mn
(b) Ni
(c) Fe
(d) Cr
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zr and Hf have almost equal atomic and ionic radii because:
(a) Of diagonal relationship
(b) Of Lanthanide contraction
(c) Actinide contraction
(d) Both belong to same transition series
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the magnetic moment of K3[FeF6]?
(a) 5.91 B.M
(b) 4.89 B.M
(c) 3.87 B.M
(d) 6.92 B.M
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following has the least magnetic moment?
(a) Cu2+
(b) Ni2+
(c) Co2+
(d) Fe2+
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The number of unpaired electrons in gaseous species of Mn3+, Cr3+ and V3+ respectively are:
(a) 4, 4 and 2
(b) 3, 3 and 2
(c) 4, 3 and 2
(d) 3, 3 and 3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The highest magnetic moment is shown by the transition metal ion with the electronic configuration:
(a) 3d2
(b) 3d7
(c) 3d9
(d) 3d5
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