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- Confused! kindly explain, Which of the following factors may be regarded as the main cause of lanthanide contraction?
Which of the following factors may be regarded as the main cause of lanthanide contraction?
- Option 1)
Poor shielding of one of
electron by another in the subshell
- Option 2)
Effective shielding of one of
- Option 3)
Poorer shielding of
electrons by
- Option 4)
Greater shielding of
Answers (1)
As we learnt in
Lanthanoid contraction -
The filling of if orbits before 5d orbits result regular decrease in atomic radii called Lanthanoid contraction or can say the size of radii not much increase.
- wherein
In lanthanoid contraction shielding of one 4f electron on another 4f electron is less than shielding of one 5d electron on another 5d electron.
Option 1)
Poor shielding of one of electron by another in the subshell
This option is correct
Option 2)
Effective shielding of one of electrons by another in the subshell
This option is incorrect
Option 3)
Poorer shielding of electrons by
electrons
This option is incorrect
Option 4)
Greater shielding of electrons by
electrons
This option is incorrect
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