Question

In the group 3 to group 12 elements, which subshell is filled up going across the rows?

Answer 1

In the group 3 to group 12 of elements, it is the d subshell that filled up going across the rows,. In the d-block of the periodic table, we have the Zinc, Cadmium, and Mercury. This corresponds to the teams 3 to 12 of the periodic table.