contestada

Why the number of d-block electrons of transition elements' ions has to be between 1 and 9. What prevents them from being transition when it is 0 or 10?

Respuesta :

oliviee

Answer:

they are called transition elements

Explanation:

is they are if 0 then they are no longer transition element but under group 2 in the periodic table

if it is 10 then it belongs to the group 3 in the periodic table

besides transition elements are all in the middle of the periodic table as d block