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WorksheetsLanthanides and Actinides
Total questions: 14
Worksheet time: 7mins
The lanthanides were firstly discovered in_________
USA
Scandinavia
Russia
Arab World
Lanthanide series, a series of metallic elements, included in the rare-earth metals , in _________ of the periodic table
Group 1
Group 2
Group 3
Group 5
The light rare earth elements are
Ce-Yb
La-Gd
Tb-Lu
Pr-Lu
1. The electronic configuration of Tb (Z = 65) is
[Xe] 4f9 6s2
[Xe] 4f8 5d1 5s2
[Xe] 4f11
[Xe] 4f14
Which of the following lanthanide ions are stable in water?
Sm2+
Ce4+
Pr3
Tb4
Which of the following lanthanides is used in Laser technology?
Y
Nd
Lu
La
Ion size of lanthanide is _____
Increase from La-Lu
Decrease from Lu-La
Decrease from La-Lu
Increase from Ac-Th
Smallest atomic radius of lanthanide is
Sm2+
Sm3+
Tm3+
Tm2+
The geometry of nine-coordinate system is
Tricapped trigonal prismatic
Octahedral
Square antiprismatic
Dodecahedral
What is the most stable ligand chelating a lanthanide?
EDTA
H2O
Oxalate
pyridine
What is the geometry of the following lanthanide complex?
Trigonal planar
Bent
Square antiprismatic
Dodecahedral
What is the coordination number of Ln[N(SiMe3)2]3
2
3
5
6
Which is the top export of Rare-Earth Metal Compounds?
USA
Sweden
China
Japan
Which of the following lanthanides are used in MRI technology?
Gd
Ge
La
Ce
