The atomic and ionic radii (M^(3+) ions) of Lanthanide elements decrease with increase in atomic number. This effect is called

The atomic and ionic radii (M^(3+) ions) of Lanthanide elements decrea

1.	The atomic and ionic radii (M^(3+) ions) of Lanthanide elements decrease with increase in atomic number. This effect is called
Answer» LANTHANOID contraction Lanthanoid expansion Actinoid contraction Actionoid expansion Answer :A