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WorksheetsLanthanides Halides & Hydrides
Total questions: 10
Worksheet time: 6mins
Which general formula is referring to the most stable Lanthanides Halides compound?
LnX3
LnX4
LnX2
LnX5
General formula of Lanthanides Halides depends on?
Number of halogens attachment
Charge of Ln & X atom
Size of Ln and X atom
All are correct
Formation of Lanthanides Halides obtained from reaction between Ln metals with X gas. What is the type of reaction for this formation?
Exothermic Reaction
Endothermic Reaction
Can we perform the extraction of LnX2 even though it was known as the less common extraction due to its low stability?
No
Yes
Which of the following is the structure for Lanthanides Halides?
Rock-salt structure
Hexagonal close-packed(HCP) structure
Complex crystal structure
High hydrogen storage capacity
Mining, Beneficiation, Leaching, Purification, Halogenation, Precipitation is the steps for extraction of?
LnX2
LnX3
LnX4
Lanthanides Hydrides
Which of the following pictures is the correct structure for Lanthanides Hydrides?
Which of these answers are the uses of Lanthanides Hydrides?
Catalysts
Nuclear Absorbers
Electronic & Magnetic Material
Glass and ceramics
What is the most common oxidation state of lanthanides?
+2
+6
+4
+3
Which of the following is not a property of lanthanides?
They are soft metals with white silvery color
They tarnish rapidly by air
The hardness of the metals increases with increase in the atomic number
The melting point of the metal ranges from 500-1000K
