The d subshell of an element with 4 shells is completely filled and there are two electrons in the 4th shell
a. How many electrons can be accommodated in the d subshell?
b. Write the subshell electronic configuration of the element.
a. d subshell accommodate 10 electrons.
b. E.C. = 1s2 2s2 2p6 3s2 3p6 3d10 4s2