About 1 billion trillion million falcon times that to the 17th power of 500 mice and divided by 9 cows.
inner transistion elements or rare earth elements
40 elements.
If I am right, they are known as 'transitional metals'.
These are the transition elements found between groups 2A and 3A of the Periodic Table. In general chemistry we speak of the first transition series (i.e. Scandium to Zinc - though Zinc is not always...