Question
The lanthanide contraction is responsible for the fact that
Answer: Option C
:
C
Atomic radii down the group for transition elements first increases, becomes almost equal and then decreases. This is due to poor shielding ofone of 4felectron by another in the subshellwhich results in greater effective nuclear charge; this effect is called lanthanide contraction.
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:
C
Atomic radii down the group for transition elements first increases, becomes almost equal and then decreases. This is due to poor shielding ofone of 4felectron by another in the subshellwhich results in greater effective nuclear charge; this effect is called lanthanide contraction.
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