Tumor markers are measurable biochemicals that are associated with a malignancy. They are either produced by tumor cells (tumor-derived) or by the body in response to tumor cells (tumor-associated). They are typically substances that are released into the circulation and thus measured in the blood.
â For example, the s subshell ( l = 0) contains only one orbital, and therefore the m l of an electron in an s subshell will always be 0. â The p subshell ( l = 1) contains three orbitals, so the m l of an electron in a p subshell will be -1, 0, or 1. â The d subshell ( l = 2) contains Â±ve orbitals, with m l values of -2, -1, 0, 1, and 2.
-3, -2, -1, 0, +1, +2, +3. 7. Each orbital can hold a maximum of two electrons, so the maximum number of electrons you can put into the subshells are 2, 6, 10, and 14 for s, p, d, and f subshells, respectively. Author: Fred Senese senese@antoine.frostburg.edu. General Chemistry Online!