what are lanthanoides and actinoides

Asked by sonaisha | 22nd Dec, 2008, 02:41: PM

Expert Answer:

Lanthanum (Z=57) and next 14 elements (Z= 58-71) which follow it are called lanthanoids.

Actinium (Z=89) and next 14 elements (Z= 90-103) which follow it are called actinoides .

Answered by  | 24th Dec, 2008, 11:33: AM

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