Select the atoms whose ions have an electron configuration of
n
d
6
(n = 3, 4, 5 for example, the 2+ ion for v ends the electron configuration with 3d 3.
check all that apply.

tl

rh

fe

os

lu

ti

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

i don,t know so just answer mine