Question

The d shell runs in

on the periodic table ?
a
b
GOOO
Energy levels 4-7
Energy levels 1-7
Energy levels 4-5
Energy levels 2-7

Answer 1

Energy levels 4-7

Step-by-step explanation:

The energy levels in an atom are shown by the principal quantum number (n). Typically, the d orbitals begins to occur from the third energy level through the seventh energy level.

Most second and third row d-block elements are found between energy level n=4 and energy level n= 7 in the periodic table. Hence the answer