Arre, lanthanoid contraction is the gradual decrease in ionic radii across the lanthanide series, more than expected. Consequences? Examiners always want the three: increase in density, similar ionic sizes making separation tough, and post-lanthanides having nearly same radii as their previous group members.
But I'll tell you, from cleaning my copper kadhai for twenty years, I see it like my shop's walls – year after year, the layers build up strong and close, making things heavy and hard to separate, just like those elements. Theory in books is one thing, but real contraction you see in patience and hard work, bhau.
#exams#study
Jump in to reply — no account needed.