Mitä siirtymämetallit tarkoittaa?
Siirtymämetalli
{'answer_start': array([-1]), 'answer_text': array([''], dtype=object)}
Citation error, replace with{{cite book| author = Tro, Nivaldo J.| title = Chemistry, a Molecular Approach| publisher = Pearson Education International| year = 2008| id = ISBN 0-13-233250-7| pages = 1052–1056}}