Identify the statement which is not correct regarding CuSO4
It react with KI to give iodine
It react with KCl to give Cu2Cl2
It react with NaOH and glucose to give Cu2O.
It gives CuO on strongly heating in air.
Transition metals usually exhibit highest oxidation states in their
chlorides
fluorides
bromides
iodides
Which one of the following sets correctly represents the increase in the paramagnetic property of the ions?
Cu2+ > V 2+ > Cr2+ > Mn2+
Cu2+ < Cr2+ < V 2+ < Mn2+
Cu2+ < V 2+ < Cr2+ < Mn2+
V 2+ < Cu2+ < Cr2+ < Mn2+
Which of the following is not a characteristic of transition elements?
Variable oxidation states
Formation of coloured compounds
Formation of interstitial compounds
Natural radioactivity
Which of the following complex has zero magnetic moment (spin only)?
[Ni(NH3)6]Cl2
Na3[FeF6]
[Cr(H2O)6]SO4
K4[Fe(CN)6]
Among the following the compound that is both paramagnetic and coloured is :
K2Cr2O7
(NH4)2(TiCl6)
VOSO4
K3[Cu(CN)4]
C.
VOSO4
VOSO4 is paramagnetic as well as coloured compound. The oxidation state of vanadium in VOSO4 is +4.
V [Z = 23] = [Ar] 3d3 4s2
V4+ [Z = 23] = [Ar] 3d1 4s0
It has one unpaired electron hence, it is paramagnetic in nature.
The point of dissimilarity between lanthanides and actinides is
three outermost shells are partially filled
they show oxidation state of + 3 (common)
they are called inner transition elements
they are radioactive in nature