Question

differentiate between lanthanoids and actinoids.​

Answer 1

Fifteen elements La-Lu are lanthanoids and fourteen elements Ce-Lu without lanthanum are lanthanides (meaning the elements similar to lanthanum). Occasionally the names are confused and 15 elements including lanthanum may be called lanthanides.

Answer 2

Answer:

lanthanoids are non radioactive while actinoids are radioactive.

lanthanoids have a low tendency to form complexes while actinoids show greater tendency to form complexes.

lanthanoids includes elements from atomic number 57 to 71 and actinoids includes elements from atomic number 89 to 103.