question_answer

  What is actinoid contraction? What are the causes of actinoid contraction? Actinoid contraction has consequence. Why?

Answer:

  The gradual decrease in atomic radii from Actinium to Lawrencium is called Actinoid contraction. This contraction is greater from element to element than the lanthanoid contraction. There is no consequence of actinoid contraction because elements succeeding actinoids are much less known.