11. The maximum number of subshells within each main shell of an atom is
a. the main shell number squared.
b. (n2) +1.
d. the main shell number.
12. Determine the maximum number of electrons in the third, or M, shell of an
No. = ____________________
The periodic chart on Page 1-39 shows each element positioned to lie in
both a vertical and a horizontal row. Each of the vertical columns is headed
with a Roman numeral that indicates the number of valence electrons, while
each of the seven horizontal rows is preceded by a heavy Arabic numeral
that indicates the number of electron shells.