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- I need help with In context of the lanthanoids, which of the following statement is not correct ?
In context of the lanthanoids, which of the following statement is not correct ?
- Option 1)
There is a gradual decrease in the radii of the members with increasing atomic number in the series.
- Option 2)
All the members exhibit +3 oxidation state
- Option 3)
Because of similar properties the separation of lanthanoids is not easy.
- Option 4)
Availability of
electrons results in the formation of compounds in +4 state for all the members of the series.
Answers (1)
As we learnt in
Electronic configuration -
The lanthanoid follow the 4f1-14 5d0-1 6s2 configuration (common configuration)with some exception due to full filled half filled electronic configuration.
- wherein
electrons of lanthanoids did not participate in bond formation.
Option 1)
There is a gradual decrease in the radii of the members with increasing atomic number in the series.
This option is incorrect.
Option 2)
All the members exhibit +3 oxidation state
This option is incorrect.
Option 3)
Because of similar properties the separation of lanthanoids is not easy.
This option is incorrect.
Option 4)
Availability of electrons results in the formation of compounds in +4 state for all the members of the series.
This option is correct.
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