where is the s (subshells) block found ?
from column 1 to 2
where is the d (subshell) block found ?
from columm 3 to 12
where is the p block found ?
from column 13 to 18
where is the f block found ?
the atom of the periodic table
they are 5
what are the stages of mass spectrometry ?
what is the process of breaking up lighter ions ?
fragmentations