A major difference between the two rows of inner transition elements is that the lanthanides _____.


a.are radioactive and the actinides are not
b.occur in nature while most of the actinides are synthetic
c.are gases at room temperature and the actinides are solids
d.have no uses while the actinides have many

Respuesta :

Due to the definition, the answer is: A major difference between the two rows of inner transition elements is that the lanthanides b.occur in nature while most of the actinides are synthetic.