WorksheetsORGANOMETALLIC COMPOUND OF LANTHANIDES
Total questions: 10
Worksheet time: 5mins
What is the most common oxidation state of lanthanides?
+2
+4
+6
+3
The lanthanides are d-block elements.
TRUE
FALSE
Select the correct answer/s about Lanthanoids
18 electron rule was applied
Lanthanoids metals are not suitable for π-back bonding
Bonding mode:
- Ionic bond
- Stabilized by strong donor ligand
π-backbonding that involve lanthanides metal and ligand leads to low value of ml
Choose one or more answer which related to σ-bond metathesis
A chemical reaction where a metal-ligand σ-bond undergoes metathesis with σ-bond in some reagent
Plays an important role in olefin polymerization reaction.
σ-bond metathesis is a uncommon reaction in lanthanides complexes
Frequently encountered in reactions involving silanes.
What are the properties of Huckel's Rule?
Sp2 hybridization
Linear compound
Planar
known as 4π + 2 electron rule
Based on the picture given, select the correct answer/s.
The ligand is a ionic ligand.
η6-(1,3,5-t-Bu3C6H3)2
The bonding between Metal and Ligand is covalent bond.
π- back bonding occur in this compound
Picture shows a ligand which attach to Samarium to form [Sm(Cp*)2].
select the correct answer/s based on this complex.
The complex is known as Samarocene
Sm2+ ion has oxidized to Sm3+ ion
Sm2+ ion have high value of third ionization energy
use as catalyst in polymerization of olefins.
η8 -cyclooctatetraene (COT) complex is available in various bonding mode.
Does the picture show the most common bonding mode that η8 -cyclooctatetraene have?
TRUE
FALSE
Choose correct statement/s about Cyclopentadienyl complexes
Monoanionic ligand
ions having difficulty in accommodate three cyclopentadienyl when the lanthanoid is large
known as matallocenes
tend to fit more when the lanthanoid is small
η1-cyclopentadienyl ligand donate one electron to form π- bond with the metal
Does this statement is correct?
TRUE
FALSE
