Identify the missing information for each atom or ion. Note that
the atoms and ions are not necessarily neutral.
A Se ion has a mass number of 77 and a charge of −2 . Determine
the number of neutrons, protons, and electrons in this ion.
number of neutrons:
number of protons:
number of electrons:
An ion has a mass number of 65, 36 neutrons, and a charge of +1
. Identify the element symbol, and determine the number of protons...