D and F block elements Quiz-14
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Q1. Only +2, +3, +4 oxidation states are shown by
Solution
c
c
Solution
b
b
Q4. Guigret’s green is
Solution
b
b
Q5.Which of the following pair of element cannot form an alloy?
Solution
b
b
Q6. Magnetic moment of [Ni(CN)4]2- is zero but that of [Ni(H2O)4]2+ is 2.83 BM
It is because of
Solution
b
b
Q7.The mercury is the only metal which is liquid at 0℃. This is due to its
Solution
a
a
Q8.Consider the following statement
I. The size the lanthanide M3+ ions decreases as the atomic number of M increase
II. Electronic spectra of lanthanides show very broad bands
III. As with transition metals, coordination number six is very common in lanthanide complexes
Which of the statements given above is/are correct?
Solution
b
b
Q9.Which shows maximum magnetic moment among the bivalent ions of the first transition series?
Q10. There are three electrons unpaired in [Co(H2O)6]2+and calculated value of magnetic moment is 3.87 BM which is quite different from the experimental value of 4.40 BM. This is because of
Solution
b
b