Question

Lanthanide ions show

• A. magnetic properties
• B. coloured ion formation
• C. lanthanide
• D. All of the above

Answer 1

The correct option is D All of the above

Lanthanides show magnetic properties due to unpaired electrons in f-subshell, coloured ion formation due to unpaired electrons in f-subshell resulting in $f-f$ transitions and lanthanide contraction due to increase in effective nuclear charge due to poor screening effect of $4f$ orbitals.