NEW
Font size
Worksheetsd and f Block Elements - 03
Total questions: 20
Worksheet time: 10mins
Which of the following period 4 oxides is used as either a physical or a chemical sunscreens in many types of commercial sunblock?
TiO2
CuO
VO25
MnO2
Which of the following statements explains why platinum, palladium, and rhodium are used in converters in car exhausts?
Transition metals make good catalysts
Transition metals react slowly or not at all with acid.
Transition metals have high melting points.
Transition metals form colored compounds.
Which of the following is not a common property of the transition metals?
They form multiple stable ions.
They are good catalysts.
They are easily vaporized
They form colorful ions.
A fe 2+ acts as a reducing agent
R: Fe3+ has stable d5 configuration
A true R true and correct reason
A true and r true incorrect reason
A false R true
A false r false
A: each transition series consist of 10 elements
r: maximum capacity of d subshell is 10
A true R true and correct reason
A true R true and incorrect reason
A false R true
A false R false
in transition series with the increase in atomic no. paramagnetism
increases gradually
decreases gradually
increases to amaximum and then decreases
decreases to a minimum then increases
Titanium shows magnetic moment of 1.73BM in its compound . What is the oxidation state of TI in the compound
1
4
3
2
the group of elements in which the electron enters the antipenultimate shell is called
s block
p block
d block
f block
Which of the following ion is is colourless
Cu+
Co2+
Ni2+
fe3+
the electronic configuration of Gadolinium (at no 64) is
[xe] 4f8 5d0 6s2
[xe] 4f3 5d5 6s2
[xe] 4f6 5d0 6s2
[xe] 4f7 5d1 6s2
the lanthanoid contraction is responsible for the fact that
Zr and Y have about the same radii
Zr and Nb have similar oxidation state
Zr and Hf have about the same radii
Zr and Zn have the same oxidation state
Amonst the following outer most configuration of transition metal which shows highest oxidation state ?
3d34s2
3d54s1
3d54s2
3d64s2
Which of the following is a correct term lanthanide elements can also be referred to as?
nonmetal
rare-earth metals
alkaline earth metal
halogen
Which of the following lanthanides are used in MRI technology?
Gd
Ge
La
Ce
Ion size of lanthanide is _____
Increase from La-Lu
Decrease from Lu-La
Decrease from La-Lu
Increase from Ac-Th
The most stable oxidation state of Ti is-:
+5
+2
+3
+4
Highest magnetic moment is shown by the ion-:
Cr+3
Fe+3
Co+3
V+2
•Which of the following ion is diamagnetic in nature?
Fe+3
Sc +3
Cr+2
Cu+2
Which of the following compounds is expected to be coloured?
AgNO3
CuSO4
ZnCl2
CuCl
The metal ion which is NOT coloured is-:
Ti+3
Fe+3
V+2
Zn+2
