d- and f- Block Elements  MCQs

MCQs of d- and f- Block Elements

Showing 51 to 60 out of 158 Questions
3 4 5 6 7 8
51.
Which of the following elements possesses irregular electronic configuration ?
(a) V
(b) Ni
(c) Cr
(d) Zn
Answer:

Option (c)

52.
State the element which has d 10 electronic configuration.
(a) Mn
(b) Fe
(c) Ni
(d) Cu
Answer:

Option (d)

53.
Which of the following elements can show maximum oxidation states ?
(a) Cr
(b) Mn
(c) Cu
(d) Ti
Answer:

Option (b)

54.
Select the most stable oxidation state of V.
(a) +3
(b) +4
(c) +2
(d) +6
Answer:

Option (b)

55.
Select the most stable oxidation state of Cr.
(a) +3
(b) +4
(c) +2
(d) +6
Answer:

Option (a)

56.
Select Mn-compound that has the most stable oxidation state.
(a) KMnO4
(b) K2MnO4
(c) Mn2O3
(d) MnO
Answer:

Option (d)

57.
Select the stablest oxidation state of Ti.
(a) +1
(b) +2
(c) +3
(d) +4
Answer:

Option (d)

58.
Which of the following transition elements has maximum unpaired electrons ?
(a) Cu
(b) Fe
(c) Cr
(d) Mn
Answer:

Option (c)

59.
Which of the following pairs of ions possess similar electronic configuration (i.e. isoelectronic) ?
(a) Cr3+ , Fe3+
(b) Fe3+ , Mn2+
(c) Fe3+ , Co3+
(d) Sc3+ , Cr3+
Answer:

Option (b)

60.
State the number of d-electrons in [Cr(H2O)6]+3 .(Atomic number of Cr is 24)
(a) 2
(b) 3
(c) 4
(d) 5
Answer:

Option (b)

Showing 51 to 60 out of 158 Questions
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